Alternatives to Inbox Spam Filter
Compare Inbox Spam Filter alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Inbox Spam Filter in 2026. Compare features, ratings, user reviews, pricing, and more from Inbox Spam Filter competitors and alternatives in order to make an informed decision for your business.
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HubSpot AEO
HubSpot
HubSpot AEO is an answer engine optimization tool designed to help businesses improve their visibility in AI-driven search results. It focuses on how companies appear in answers generated by platforms like ChatGPT, Gemini, and Perplexity. The platform provides a visibility score that shows how often a brand is mentioned and the sentiment of those mentions. It also tracks relevant prompts and questions that potential customers are asking AI systems. HubSpot AEO analyzes which content sources and pages influence AI-generated answers. The tool offers actionable recommendations to help businesses improve their presence in AI search. Overall, HubSpot AEO helps companies become more discoverable in the evolving landscape of AI-powered search. -
2
InboxAlly
InboxAlly
InboxAlly is an email deliverability platform for senders whose messages are landing in spam or promotions instead of the primary inbox. It repairs and protects sender reputation at the domain and IP level, warms up new domains and IPs on an adaptive schedule, and shows where messages actually land through inbox placement testing across Gmail, Outlook, Yahoo and other major mailbox providers. Live blacklist monitoring and deliverability alerts surface problems as they develop rather than after a campaign underperforms, and an ML-modeled sender score makes reputation measurable week to week. InboxAlly runs alongside the stack you already have. It works with any ESP, SMTP service or custom sending infrastructure - including Mailchimp, SendGrid, Amazon SES, Brevo, Klaviyo, HubSpot and Instantly - with no migration and no change to how you send, and without handing over your sending credentials. A REST API and native integrations support programmatic setup, and separate sender profiles let agencies and multi-brand senders manage many domains side by side. Based in New York, InboxAlly supports email marketers, agencies, cold outreach teams, SaaS senders and deliverability consultants, from a single domain to enterprise sending programs. Every plan includes a dedicated customer success manager and 24/7 live support, and evaluation starts with a 10-day free trial that requires no credit card. -
3
HubSpot CRM
HubSpot
HubSpot brings your marketing, sales, and service teams together on the same AI-powered customer platform. HubSpot's Customer Platform is not just a tool; it's the heartbeat of your business. Designed with passion and precision, HubSpot's Smart CRM stands out as the ultimate solution for empowering your team to build deeper customer relationships. It transforms the way you engage with your customers by offering a seamlessly integrated, all-in-one platform for sales, marketing, and customer service. With HubSpot's CRM, you gain unparalleled insights into your customer interactions, all organized in an intuitive, easy-to-navigate dashboard that promises to skyrocket your team's efficiency. The platform is engineered to grow with you, offering scalable solutions that adapt to your evolving business needs. What's more, HubSpot's Customer Platform includes a robust free version, packed with essential features, making it the perfect choice for ambitious businesses of all sizes.Starting Price: Free -
4
SpamTitan
TitanHQ
SpamTitan email security is an email spam filter for businesses, smbs, MSPs, and schools. SpamTitan email security blocks spam as well as phishing and day-zero attacks, viruses, malware, ransomware, and other email threats. Helps control mail flow, clean it, and protect against unwanted email. We provide easy-to-use yet advanced email security for businesses, smbs and MSPs that are Office365 friendly. SpamTitan - Premium functionality included: • CEO Impersonation protection • Phishing/ Spear phishing protection • Link analysis • Full Sandboxing • Zero Day Attacks protection • Mail Spooling • Spoofing protection • Malware and Ransomware protection • SPF/DKIM/DMARC checking • Encryption • Fully multitenant environment • Ability to rebrand the entire UI • Full REST API: • Comprehensive support and set up docs Try a FREE, fully supported trial of SpamTitan Email Security today.Starting Price: $2.14/user/month -
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ZeroBounce
ZeroBounce
ZeroBounce is an email verification, scoring and deliverability platform helping businesses improve their inbox placement. The service detects email typos, nonexistent and abusive email accounts, spam traps and other risky email addresses. ZeroBounce also provides an email scoring service and a suite of deliverability tools to further enhance email inbox placement. The company operates a military-grade security infrastructure, ensuring customer data is protected at the highest levels. With more than 23 billion emails validated to date, ZeroBounce serves 400,000+ businesses in 190+ countries and adds up to 200 new clients every day. Companies using email lists validated by ZeroBounce report a 99%+ accuracy rate and maintain a good sending reputation. In 2019, ZeroBounce took no. 851 on the Inc. 5000 list of the fastest-growing private companies in the United States. In 2020, ZeroBounce rose to no. 40 on the list. In 2021, ZeroBounce was number 9 on the Inc. 5000 Regionals list.Starting Price: $18 - 2000 Validation Credits -
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Bot Butcher
Bot Butcher
Bot Butcher is an API designed to help developers stop contact form spam bots on websites by automatically classifying incoming messages using artificial intelligence. When a visitor or automated system submits a message through a website’s contact form, the message can be sent to the Bot Butcher API along with contextual information such as the domain. It uses a fine-tuned large language model to analyze the content and determine whether the message is spam or legitimate within the context of the website’s topic. The API then returns a JSON response indicating the classification, allowing developers to automatically block spam or pass valid messages to the intended recipient or CRM system. This enables websites to filter unwanted bot traffic before it reaches inboxes, significantly reducing the amount of spam that site owners must handle.Starting Price: $1.99 per month -
7
You’re already using HubSpot and WhatsApp But have you integrated them yet? HubSpot + WhatsApp helps small businesses continue to service customers on WhatsApp, while ensuring the conversations are mapped in the HubSpot CRM! HubSpot + WhatsApp will enhance HubSpot to give you a 360 degree view of your customer service communication! Integrate HubSpot + WhatsApp and use WhatsApp the way you use HubSpot’s other awesome tools! Create and save templates, send messages and much more! Use HubSpot to do customer service, on WhatsApp: one messaging from within HubSpot. See the conversation history on the contact’s timeline on HubSpot. No need to keep your phone next to you. Send text/ photos/ videos/ urls. Receive and record all incoming messages. Create and store message templates. Use WhatsApp messages as HubSpot triggers (not actions) in workflows. You cannot do bulk or automated messaging using this tool.Starting Price: $99 per month
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Spam Arrest
Spam Arrest
Before using Spam Arrest, over 90% of our customers tried a spam filter on their inbox, yet spam still got through. Spam Arrest protects your mailbox from 100% of spam with a patented method for verifying relationships between you and your valued contacts, making email safe for everyone. Access your email using your favorite POP3/IMAP-compatible program (such as Outlook or Eudora), or from anywhere using our powerful webmail system. Get a new email address, as well as protect your existing mailboxes. Patented challenge, response technology blocks 100% of automated spam. Webmail allows you to access your email from any web browser, without having to install any additional software. SMTP is a standard protocol used for sending email. When you send email through the Spam Arrest SMTP server or webmail, the person you are sending email to is automatically added to your whitelist, so that they can reply to you without having to complete the verification process. -
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MailCleaner
MailCleaner
MailCleaner is a business anti spam gateway installed between your mail infrastructure and the Internet. It offers professional protection against viruses and eliminates up to 99% of spam. While email is necessary for any corporate operations, it can also expose your company to a myriad of risks. This is because it offers virus, spyware, ransomware, cryptolocker, trojan and other harmful programs easy access to your business computers for phishing or extortion attack. This is where MailCleaner can help by stopping malware before it even reaches your employees’ inboxes. Its spam filter server ensures that more than 99% of unwanted messages are blocked, analyzing each message, so you only receive those that are important. If a harmful file is detected, MailCleaner will automatically send it to a quarantined zone where it cannot cause any more damage in the future. We are proud to offer a number of packages suitable for small companies as well as large corporations.Starting Price: $1 per month -
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CleanTalk
CleanTalk
CleanTalk is a cloud-based anti-spam protection service and suite of plugins that keeps websites free of spam by analyzing visitor behaviour and form submissions in real time and blocking spambots before they post comments, create fake registrations, submit contact forms, place fake orders, or send spam messages, all without requiring CAPTCHAs, puzzles, or user challenges that interrupt the visitor experience. It centralizes anti-spam detection across popular CMS platforms like WordPress, Joomla, Drupal, and custom sites by using proprietary algorithms and a growing database of spam-active IP addresses, emails, and domains to identify and filter out unwanted content while allowing legitimate user interactions to pass; administrators can view and manage logs, private block lists, and spam statistics from a dashboard. Additional features include a SpamFireWall that prevents bot traffic from reaching the site, real-time email validation to block fake or disposable addresses. -
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SpamBully
SpamBully
Intelligently knows which emails you've received are good and which are spam by using artificial intelligence and server blacklists. Everytime you download your email, SpamBully will make sure good emails make it to your Inbox. Decide who and what makes it into your Inbox. Choose which email addresses, words & phrases, countries, languages, and IP's are allowed or blocked from your Inbox. SpamBully always makes sure people in your address book make it to your Inbox. Get back at spammers by increasing their costs, returning their spam, and reporting them to the servers they came from and the FTC. Email a special password to an unfamiliar sender that they must correctly type in before their email is allowed to your Inbox. Checks Realtime Blackhole Lists for internet domains that are responsible for sending massive amounts of spam and automatically filters them from your Inbox.Starting Price: $29.95 per year -
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Hublead
Hublead
🌐 Hublead is the simplest way to manage B2B contacts and company information across LinkedIn and HubSpot. 💻 With Hublead, you can discover top leads, import LinkedIn contacts & conversations to HubSpot in bulk, and automatically enrich your CRM to engage with decision-makers—armed with the right contact details. 💡 With Hublead, you can: 1. **Import LinkedIn Contacts to HubSpot**: With just one click, you can import any LinkedIn contact directly into HubSpot. 2. **Import LinkedIn Messages to HubSpot**: Keep all your conversations in one place! Import your LinkedIn conversations directly into HubSpot. 3. **Find Email & Phone Numbers on LinkedIn**: Reach decision makers quickly with Hublead. 4. **Manage HubSpot Directly from LinkedIn**: No more tab switching! Hublead brings your CRM information right to your fingertips. View and edit HubSpot fields directly from LinkedIn profiles.Starting Price: $30/month/user -
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SmartReach
SmartReach.io
SmartReach.io is a cold email software with multichannel outreach capabilities via channels like email, LinkedIn, calls and WhatsApp. Run automated cold email campaigns, then layer LinkedIn, WhatsApp and calling into the same sequence with AI personalization built in. Rotate sending across unlimited accounts, match your prospect's ESP, test inbox placement, verify addresses free, warm up mailboxes free and run spam checks with Spintax variations. An AI email agent writes a fresh message for each prospect from their data and your campaign inputs. A built-in B2B database of 300M+ contacts across 50M+ companies keeps pipelines full, while a shared inbox and campaign analytics keep teams on top of every reply. Trusted by 5,000+ businesses and rated 4.6 on G2 from 58 reviews. Plans start at $29 per month, billed by prospects contacted, with unlimited sending accounts, a 14-day free trial and integrations with HubSpot, Salesforce, Pipedrive, Zoho and 8,000+ apps via Zapier.Starting Price: $29 per month -
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SpamAssassin
Apache Software Foundation
Welcome to the home page for the open-source Apache SpamAssassin Project. Apache SpamAssassin is the #1 Open Source anti-spam platform giving system administrators a filter to classify email and block spam (unsolicited bulk email). It uses a robust scoring framework and plug-ins to integrate a wide range of advanced heuristic and statistical analysis tests on email headers and body text including text analysis, Bayesian filtering, DNS blocklists, and collaborative filtering databases. Looking for tips to improve your existing installation? Click here for a variety of topics in our Wiki that might help. SpamAssassin uses a wide variety of local and network tests to identify spam signatures. This makes it harder for spammers to identify one aspect which they can craft their messages to work around. -
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MakeTheForm
MakeTheForm
MakeTheForm is the form backend for developers and agencies. Instead of writing an API route, running a database and wiring up email for every contact form, you point the form at one MakeTheForm endpoint. It works with plain HTML, any JavaScript framework (React, Next.js, Astro, Vue), site builders like Webflow and Framer, and pages generated by AI website builders. Every submission is stored first and delivered second, so nothing is lost if a destination is down. Submissions land in a searchable, exportable inbox and are delivered by email, to Slack, to signed webhooks, or to tools like Discord, Notion, Airtable, HubSpot, Mailchimp and GitHub. Failed deliveries are retried automatically. Spam is blocked with layered filtering (honeypots, content scoring, allowed domains and rate limits) without making real visitors solve a CAPTCHA.Starting Price: $0 -
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Allegrow
Allegrow
Allegrow takes your email outreach to a new level as you leverage our technology to optimise your sender reputation and inbox placement. We make sure your emails reach the priority inbox, not the spam folder. Increased sender reputation allows more prospects inside your cadences to open your emails and engage with you. This generates leads more efficiently and the overall reply rates on your campaigns. Insights from the Allegrow network of the thousands of email spam folders we monitor keep you firing on every email outreach best practice. Having real-time data across all major ISPs increases lead conversion rates as your emails won’t slip through the cracks. The frequency that your emails get placed inside prospects primary inbox compared to the spam, unfocused, or junk folder is no longer a blind spot with the multiple tests our technology automates every day.Starting Price: $9 per user per month -
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Hornetsecurity Spam Filtering and Malware Protection
Hornetsecurity
Hornetsecurity’s Email Spam Filter and Malware Protection Service offers the highest detection rates on the market, with 99.9% guaranteed spam detection and 99.99% virus detection. Our Spam Filtering Service effectively protects mail servers against DDoS attacks and phishing emails. Our multi-layered spam filtering service blocks the majority of spam emails as they arrive—keeping the quarantine clear and easy to manage. With proven features and thorough spam filtering mechanisms, your inbox remains free of annoying spam emails. The abbreviation DDoS stands for Distributed Denial Of Service. A DDoS attack is a type of DoS attack in which multiple hijacked systems are used to overload system resources or network bandwidths. This makes websites and online services unreachable. For companies, this often means large financial losses due to delivery bottlenecks, for example, and major damage to their image from the perspective of customers. -
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SpamCop
Cisco
SpamCop is the premier service for reporting spam. SpamCop determines the origin of unwanted email and reports it to the relevant Internet service providers. By reporting spam, you have a positive impact on the problem. Reporting unsolicited email also helps feed spam filtering systems, including, but not limited to, SpamCop's own service. The SpamCop Blocking List (SCBL) lists IP addresses which have transmitted reported email to SpamCop users. SpamCop, service providers and individual users then use the SCBL to block and filter unwanted email. The SCBL is a fast and automatic list of sites sending reported mail, fueled by a number of sources, including automated reports and SpamCop user submissions. The SCBL is time-based, resulting in quick and automatic delisting of these sites when reports stop. -
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Raptor Email Security
Peregrine Computer Consultants Corporation
Raptor Email Security is an MX-based email security solution designed by industry experts to stop spam, phishing, and malware attacks using a unique scoring framework and multiple technologies including SpamAssassin, ClamAV, MIMEDefang, and Sendmail. Let our experts handle the annoying spam for you! No Spam. Zero Tickets. 2X Resources. With your email going through our servers, we handle the brunt of most cyber attacks which keeps your server better protected! With less resource usage, you'll be able to increase your hosting revenue and monetize your server by adding more hosting accounts. Raptor Email Security also comes with Raptor Review which provides a detailed, expert analysis of your email configuration. It's a phishing hotline and white glove service to definitively fix your email problems including blocking spam, improving email deliverability, identifying scams, finding missing email, and unblocking good email. Set up in minutes. Free 30 Day Trial Available!Starting Price: $15/server/month -
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Seventh Sense
The Seventh Sense
AI software designed to drive maximum performance and engagement with your existing email marketing program. Email inboxes are noisy, attention spans are at an all-time low and getting your emails to land in the inbox is harder than ever. As the only email delivery optimization system designed specifically for HubSpot and Marketo, you'll be able to break through the clutter using artificial intelligence all while relying on HubSpot and Marketo to deliver your emails and provide the reporting capabilities that you're used to. Learn more about how it works with Marketo and HubSpot. There's more competition than ever for attention in inboxes. When you use Seventh Sense's artificial intelligence to optimize and personalize email delivery times for each individual in your database, you'll see more engagement and better results with your email marketing.Starting Price: $80 per month -
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MailChannels
MailChannels
Secure and deliver email at scale. Use MailChannels to uncover bad actors and prevent spammers from taking advantage of your infrastructure. Monitor outgoing email messages for spam and unusual sending activity. Protect your customer inboxes against spam, phishing, and other email threats. A powerful, intuitive interface makes managing your customers simple and efficient. We operate across multiple clouds and minimize single points of failure to keep our services online, all the time. Get a real human response to your ticket within 30 minutes or less, 24/7/365. MailChannels Outbound Filtering is a cloud-based SMTP relay service which identifies and blocks spammers to ensure reliable email delivery. With Outbound Filtering, you can eliminate email delivery problems caused by IP address blocklisting. Automatically shut down compromised accounts and scripts to improve your security.Starting Price: $79.99 per month -
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EmailZap
EmailZap
EmailZap is an intelligent tool designed to simplify email management, helping you clean up your inbox effortlessly and focus on what matters. It’s smart AI works automatically by analyzing and understanding your email habits and cleaning junk unwanted mails on the go, so that you don’t spend hours sorting through spam and unwanted mails. How EmailZap helps you? • SAVES TIME • REMOVES CLUTTER FROM INBOX • KEEPS SPAM AWAY • HELPS YOU FOCUS ON IMPORTANT TASKSStarting Price: $1/month/user -
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SpamCheckAI
SpamCheckAI
Built for SpamCheck-ing free form JSON, not emails like all the other spam APIs. Detect and block spam at the source with our extensive IP address analysis. Sophisticated analysis tools for detecting and assessing potential spam content. Validate and verify emails with our thorough multi-stage process. SpamCheckAI not only identifies and blocks spam but equips you with the comprehensive data needed to make informed decisions. Unleash the unparalleled power of SpamCheckAI’s URL Analysis, a revolutionary tool that digs deep to uncover hidden risks and elevates your platform’s integrity to new heights. Just pass the email and IP if you have them, then toss in any JSON object as the body. Whether you’ve got a handful of data or a whole heap, we’re all about flexibility. With SpamCheckAI, you’re in control, and spam doesn’t stand a chance. SpamCheckAI's API can analyze various content types including emails, IP addresses, and text content. -
24
Checkpoint Anti-Spam and Email Security
Check Point Software Technologies
Check Point Anti-Spam & Email Security provides comprehensive protection for messaging infrastructure. A multidimensional approach protects email infrastructure, provides highly accurate anti-spam coverage and defends organizations from a wide variety of virus and malware threats delivered within email. Comprehensive email security with 97% spam detection. Advanced anti-spam protection, including content-based and via IP reputation. Offers antivirus protection with both zero-hour and signature-based detection. Email IPS protection against Denial of Service (DoS), buffer over-flow attacks. Simplified configuration and management of mail security. Simple configuration with low management-overhead. Full user control with no user installation required. Real-time detection and updates provide immediate protection from outbreaks. Integrated into the Check Point Infinity Architecture. Activate Anti-spam and email security on any check point security gateway. -
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mail-tester
mail-tester
We needed a cheap, simple and efficient way to quickly test the quality of our own newsletters. We simply built on our own tool. Now we're sharing it for free via our web-interface and enable you to include our tests in your own app and whitelist our service by creating an account. We're geeky email software engineers. We generate a random email address each time you access our port. You should send a message from your favorite Newsletter/email software to this email address. Once done, click on the check your score button and as soon as we receive your message, our snail will stop to give you your spam score. Mail-tester will analyze your message, your mail server, your sending IP and show you a detailed report of what's configured properly and what's not. All spam filters work differently. What may pass in mail-tester, might not in your own office inbox. It also depends on user preferences.Starting Price: €50 per 500 test -
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Preventive protection for cloud-based applications such as email, collaboration, and storage. A powerful combination of spam filtering, anti‑malware scanning, anti‑phishing, and advanced threat defense capabilities. Equip your Microsoft 365 Exchange Online, OneDrive, Teams, and SharePoint Online with an extra layer of advanced protection. Helps eliminate unsolicited emails, targeted attacks, and ransomware, allowing employees to focus on their jobs and ensure business continuity. Get immediate notifications direct to your dedicated console, or via alerts. New users are protected automatically. Provides advanced protection for Microsoft 365 applications against malware, spam, or phishing attacks with ultimate zero-day threat defense and an easy-to-use cloud management console. Now using an enhanced, award-winning engine with improved performance, this essential component filters all spam emails and keeps user mailboxes free of unsolicited or undesired messages.Starting Price: $119.50 per year
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Saular
T&H Digital
Saular connects the logistics power of OpenSolar with the customer relationship excellence of HubSpot. Together, they bring you even better business results. Saular is designed to bridge the gap between OpenSolar and HubSpot for Solar companies, installers and more. OpenSolar simplifies interactions with home addresses and solar panel suitability. HubSpot provides unparalleled customer relationship management tools to maximize your sales and service results.Apart, these tools are powerful but limited systems. When brought together with Saular, they take your business even further. Projects and Contacts created in OpenSolar are automatically created in HubSpot to centralise your CRM data. Deals in HubSpot can be automatically created for Projects in OpenSolar.Starting Price: $25/month -
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VerifiedEmail
VerifiedEmail
VerifiedEmail is the fastest, most accurate real-time email verification and bulk email list cleaning solution on the market today. VerifiedEmail offers the most competitive pricing without compromising privacy or security, thanks to its proprietary, on-demand infrastructure. It comes fully equipped with the following: - Real-time Individual and Bulk Email List Verification (duplicates removal, syntax checking, domain validation, SMTP verification and scoring, and more). - Fast and Reliable API - Website Widget - Pre-built Integrations (Zapier, HubSpot, Klaviyo, etc.) Bounced emails, spam traps, and damaged sender reputations cost businesses time and money. VerifiedEmail offers a straightforward, affordable way to clean and verify email lists quickly and accurately, helping businesses focus on what matters most: connecting with their audience.Starting Price: $7 -
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Datawarehouse.io
Datawarehouse.io
Datawarehouse.io for HubSpot is a suite of apps purpose built for HubSpot designed to put your data at your fingertips. No coding is required to use any of our applications - we've already taken care of it. Datawarehouse.io processes over 2 billion records daily. Our service is predictable and reliable at scale. Datawarehouse.io utilizes all of the available HubSpot APIs to allow for seamless and data rich integrations. Because Datawarehouse.io focuses only on HubSpot we are able to provide more HubSpot data to you reliably at a low cost. Integrate your HubSpot data and empower it with BI Tools such as Tableau and Power BI. Export your HubSpot Data using our Ultimate Data Export tool built specifically for HubSpot, all in a single self service solution developed by a HubSpot Elite Solutions Partner.Starting Price: $99.00/month -
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SpamHero
iSparks
Sender behaviors are tracked in real-time. The sender's reputation is weighed during the filtering process. Using spam traps around the world we are able to detect new spam attacks as they occur and adapt to them instantly. Never miss an important email. All spam is stored in a searchable quarantine. The process usually takes less than 5 minutes to get set up! In fact, you don’t even have to tell SpamHero what email addresses on your domain are valid. During your trial period, SpamHero will auto-learn what email addresses on your domain are valid. Unlike other spam filtering systems that rely on fancy algorithms that spammers can easily defeat, SpamHero's rule-based system features million of rules that are constantly updated and maintained by live superheroes and robots 24/7. Like other spam filtering solutions, we use popular virus scanners to help block viruses.Starting Price: $5 per month -
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Turbyn
Turbyn
Turbyn is a HubSpot custom code action for teams that have outgrown the native one. HubSpot's built-in custom code action requires Data Hub Professional, stops at 20 seconds and 128 MB, ships a fixed set of libraries, and runs tests against real records. Turbyn removes those limits. Install it as a HubSpot app, choose the Turbyn action in any workflow, and write JavaScript or Python using any npm or pip package. Runs can last up to 2 hours with up to 8 GiB of memory. Build, test with sample inputs, then publish an immutable version. Secrets are bound to the action, every execution runs in its own isolated sandbox, and each run leaves a record of its inputs, logs and outputs. Existing HubSpot custom code usually works unchanged. Use it for enrichment, lead scoring, data validation, territory routing, ERP sync and document generation. Free to start with 1,000 credits.Starting Price: $99/month -
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Hi Voicemail
BridgePoint
Trusted by top salespeople to manage their voicemails. Stop unwanted, junk messages wasting your time. Magically turn those voicemails into text. Get the gist without listening. Stop robocalls and spam cluttering your inbox. Read your voicemail instantly, multiple voicemail greetings, and change greetings on the fly. Forward to email or delegate to your team, offline support, and unlimited cloud storage. Spam blocking isn’t perfect, so we don’t destroy your data. Access all blocked voicemails right from the app. Contribute back to the community by adding callers to your own whitelist/blocklists. Read your voicemail and create custom voicemail greetings. Call forwarding unanswered, busy, or out-of-range calls will use your bundled minutes or be charged at your landline calling rate depending on your mobile carrier plan. Activate greetings automatically using locations and forward voicemails to email automatically.Starting Price: Free -
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Akismet
Automattic
Akismet filters out your comment spam for you, so you can focus on more important things. We all hate spam. It’s annoying. It hurts your site’s credibility. Filtering it manually is confusing and time-consuming. Time spent dealing with spam is time stolen from the business of your site. Used by millions of websites, Akismet filters out hundreds of millions of spam comments from the Web every day. Add Akismet to your site so you don't have to worry about spam again. Sign up for an Akismet plan that best suits your needs. Use your API key to activate your Akismet plugin or module. Rest easy knowing that Akismet is protecting your site from spam. We want to keep spam off of the web and you can help us do it. Our affordably priced personal and business options allow us to provide free spam protection for over 7 million users.Starting Price: $5 per month per site -
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SpamStopsHere
Zix
SpamStopsHere provides 24/7 spam filtering with zero-hour malware protection and almost no false positives without any user tuning or custom filtering. Setup is easy and there is almost no maintenance. Like our other hosted email services, it includes 24/7/365 live support via phone, chat or email. SpamStopsHere Professional and Enterprise Editions support multiple mail servers, and the ability to specify how you want us to distribute the load among them. Incoming mail is distributed evenly among your mail servers. For example, if you have 3 mail servers, roughly a third of your incoming mail will be sent to each server in an alternating fashion. SpamStopsHere will send emails to the first server in the list as long as it can receive mail, then to the next server in the list as long as it can receive mail, and so on. If Enabled, an email will be sent to your technical contact if our SpamStopsHere detects that your MX records are incorrect. -
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FortiGuard Antispam
Fortinet
A highly effective antispam is key to protecting your organization because email is the #1 vector for the start of an advanced attack on an organization. FortiGuard Antispam provides a comprehensive and multi-layered approach to detecting and filtering spam processed by organizations. Dual-pass detection technology can dramatically reduce spam volume at the perimeter, giving you unmatched control of email attacks and infections. Additionally, FortiClient endpoint agents can block spam messages on remote computers and mobile devices. In the 2015 VBSPAM Test from Virus Bulletin, Fortinet’s antispam ranked second highest in the security industry for security effectiveness, earning a 99.98% effectiveness rating. Protects your organization against threats delivered through email with highly effective antispam protection. Customize your policies to fit your organization with antispam filtering at a domain, group, or individual user level. -
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Mailinblack
Mailinblack
Protect your business and employees against threats with the leading email protection solution in Europe. Mailinblack technologies combine artificial and human intelligence and have been recognised for more than 15 years by companies, health establishments and public institutions. Every year, 250 billion emails are sent worldwide, a large majority of which contain unwanted advertising. On average, your employees spend 5 hours per day working on emails, while 75% of them are spam. Mailinblack helps your employees, allowing them to save 40 minutes per day processing their emails. How? Our solution is designed to detect spam, newsletters and viruses, and to automatically sort the emails in your messaging system. You can finally take back control! 92% of enterprises have been victims of a cyberattack by ransomware, malware or attempted phishing. From data loss to financial damage, a tarnished reputation and wasted time, the impacts are serious and can even result in businesses going under. -
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SpamRate
SpamRate
SpamRate is an email deliverability testing platform for teams that send newsletters, transactional messages, and marketing campaigns. Users send a test message to a set of seed mailboxes at Gmail, Outlook, Yahoo, and Zoho, and SpamRate reports where each copy was placed, separating the inbox from spam and from tabs such as Promotions. Every test also runs technical checks on the sending domain, covering SPF, DKIM, DMARC, MX, PTR, BIMI, MTA-STS, and DANE records, together with domain and IP blacklist lookups and an analysis of message content and authentication headers. The results are combined into a spam rate score alongside the specific issues that lowered it, and every test is stored so changes over time stay visible. Scheduled monitors repeat the tests and send alerts when placement or authentication changes. A WordPress plugin brings the same checks into the WordPress admin, and a set of DNS and domain diagnostic tools is available without an account.Starting Price: $19.99/month -
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SpamTitan Plus
TitanHQ
SpamTitan Plus Anti-Phishing is an AI-driven email protection solution that provides “zero-day” threat protection and intelligence. Spam Titan Plus provides 100% coverage of ALL current market leading anti-phishing feeds, 1.5X increase in unique phishing URL detections and has 1.6X faster phishing detections than the current market leaders. With real-time continuous updates providing SpamTitan Plus with 10 million new, never-before seen malicious URLs a day. Book a SpamTitan Plus demo Today. -
39
Hapily
Hapily
Hapily is an in-person marketing and event management platform built to work with HubSpot, helping teams connect their entire event strategy to their CRM and turn engagement into pipeline, revenue, and growth. Before an event, teams can manage registration, communications, promotion, ticketing, event landing pages, invite flows, sessions, and pre-booked meetings from one CRM-connected system. During events, Hapily captures leads, manages check-in and meetings, tracks attendees, prints badges, and syncs engagement directly into HubSpot in real time. AI-powered lead capture helps enrich contact data and turn onsite conversations into actionable CRM activity. After the event, teams can automate attendee follow-up, manage leads, run surveys, connect activity to deals, and measure reporting and ROI. Event data lives directly in HubSpot through an event-ready data model that works with existing reports, workflows, and dashboards.Starting Price: $600 per month -
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ISnotSPAM
ISnotSPAM
Sending newsletters and email marketing is not easy. You need to work on the design, the graphics and the content. Being busy with all that work, you might forget to check if your content is set to trigger some spam filter which will send your hard work straight to the subscribers' spam folder. IsNotSpam online spam checker was created to help you test email and newsletter content, and alert if it is likely to trigger spam filters. 99.99% of email accounts use spam filters these days. Spam filters recognize spam messages by analyzing message content for spam characteristics. Sometimes these filters fail and mark legitimate emails as spam. Such emails are sent to the Spam folders and are not seen by the recipient. This filter failure is called a "false positive" as it marked a legitimate non-spam message as spam. Newsletter senders and email marketers need to check that their emails do not have spam characteristics in order to lower the risk of their newsletters being marked as spam. -
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HubSpot AI
HubSpot
HubSpot's AI is an advanced suite of artificial intelligence tools designed to boost productivity and efficiency for marketing, sales, and customer service teams. It includes Breeze Assistant, an in-app AI expert that helps with tasks across HubSpot's platform; AI Agents that handle marketing, sales, and customer service tasks typically performed by humans; and data enrichment features which enrich contact and company data while identifying buyer intent to target the right leads effectively. These features are seamlessly integrated throughout HubSpot’s ecosystem, delivering a comprehensive AI-powered solution for customer-facing teams to work smarter and achieve better results. -
42
HubSpot Meetings
HubSpot
Schedule meetings faster and forget the back-and-forth emails. Your calendar stays full, and you stay productive. Let prospects book a meeting time that works for both of you. Book more meetings and appointments with less hassle. Syncs with Google Calendar and Office 365 Calendar. Don’t get stuck in a back-and-forth email chain trying to find a time that works for everyone to meet. With HubSpot’s meetings tool, prospects can automatically book a meeting with you or multiple people in your company. The HubSpot meeting scheduler works with the apps your team already uses and is connected to your HubSpot contacts database, so every time a prospect books a meeting your database grows and stays in sync. Start booking more appointments with less hassle, and get your time back to focus on more important things. Give prospects the power to book meetings with you, and save hours of time on unnecessary emailing.Starting Price: Free -
43
Folderly
Folderly
AI-based email deliverability platform for monitoring, spam testing, and maintaining your email deliverability by solving any spam issues. Our goal is to help marketers accelerate their sales by assisting them in sending emails that drive revenue. Over 51% of all business emails worldwide never reach the inbox. Losing your emails to spam folders ultimately leads to budgeting issues and missed sales opportunities. Folderly makes sure that you're never in that 51%. Avoid blacklists, bypass spam filters, and see your messages delivered to your email recipients’ inboxes. We designed Foldely from the ground up to help companies receive returns on their marketing dollars. Whether you're looking to increase the email deliverability of your emails across multiple email addresses, or want to prevent any spam-related problems before they occur - Folderly is a great starting point to make sure your messages are reaching your recipients' inboxes.Starting Price: $160 per month -
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Diffspot
concret.io
Diffspot is an advanced HubSpot audit and comparison tool built to simplify portal management for growing teams. It enables users to scan, analyze, and compare multiple HubSpot environments with ease. By providing clear insights into CRM properties, workflows, pipelines, and configurations, Diffspot helps reduce errors, streamline migrations, support sandbox testing, and drive more efficient, reliable operations.Starting Price: $0 -
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modusCloud
Vircom
Vircom’s modusCloud is a cloud email security product providing real-time threat protection spam and phishing detection, advanced multi-layer anti-virus and email archiving. Users receive comprehensive protection against unwanted and malicious email. while administrators can easily tailor service to users’ needs and policies. modusCloud gives clients access to an enterprise security technology and infrastructure that is used by some of the world’s largest and most security conscious companies. We combine this with expert knowledge and understanding of the needs that smaller businesses have. Along with our email threat protection, we provide a hosted email security product with a robust filter-rules engine, email continuity with Emergency Inbox, policy-enforced encryption and a cloud-based email archive. All of which is managed in a simple and intuitive user interface. -
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UltraMail24
UltraMail24
Create HTML email templates without HTML knowledge. Creating template is just like editing a letter in you favourite text editor. AntiSPAM test - Your email is analyzed for known spam keywords and the spam report shows you exactly what needs to be changed, ensuring your email is delivered to as many of your subscriber's inboxes (and not junk mail folder) as possible. Take a look at over 130 built-in HTML templates or design your very own. Select the template you like and replace the default content with your own texts, images and contacts. Popup and Inbox Previews - see exactly how your email will look before you send it. You can view a preview in your web browser or even email it to yourself. It is very important and necessary to segment a mailing list according to various criteria because your subscriber is interested in relevant and useful information.Starting Price: $9 per month -
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Glasa
Glasa
B2B lead generation and sales intelligence platform with verified contact data and cold email tools. Glasa is a B2B lead generation and sales intelligence platform. It gives sales teams access to 800M+ contacts and 55M companies with triple-verified emails (under 2% bounce), plus AI inbox warmup, email sequences, a unified inbox, HubSpot and Salesforce sync, and email finder and verification APIs. Plans start at $49.99/month, about $0.001 per lead, and free prospecting tools are available with no account needed.Starting Price: $49.99/month -
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Abusix Mail Intelligence
Abusix
Abusix Mail Intelligence is an innovative set of blocklists (RBL/DNSBL) that adds real-time threat data to your existing email protection. Considered as the first line of defense, blocklists help to prevent email-borne threats such as spam and malware from entering your network. We’re the first line of defense for your mail servers which allows you to save bandwidth and CPU caused by the more costly in-depth spam and virus analysis required for later content filtering. Abusix Mail Intelligence prevents outbound spam by helping you identify risky or compromised accounts by using our AuthBL. We also prevent outbound spam by providing additional data to your existing filters using our Domain, Short URL, Disk URL, Cryptocurrency Wallet, and Email blocklists. -
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Mailprotector
Mailprotector
Mailprotector delivers award-winning email experiences exclusively through our amazing partner resellers. Easy to use encrypted email with no plugins or apps. Bracket has turned using email encryption from dread to delight. Just wrap brackets around the [subject] in any email client on any device, and Bracket handles the rest. Total email security that filters all the junk people don’t want. CloudFilter delivers full-stack protection from annoying spam and crippling email-based virus and phishing attacks in a way that’s effective, efficient, and easy to use. Prevents spam proliferation and keeps damaging or sensitive data from being leaked via email. SafeSend expands beyond CloudFilter’s outbound filtering by giving greater control over outbound email traffic with custom content rules and more. -
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HyperDial
HyperDial Technologies
HyperDial is a complete AI-powered cloud phone system built to lift connect rates and turn more calls into revenue. It pairs a global directory of local & toll-free numbers with local-presence dialing, automatic number rotation, and AI number-health monitoring that rests numbers before carriers flag them as spam. Predictive, auto, power and parallel dialers keep reps talking, not waiting, with automated follow-ups, voicemail drop, call scheduling and dispositions. A browser-based softphone (WebRTC) handles inbound and outbound calls, alongside IVR, smart routing, queues, forwarding, recording, transfers and conferencing. Real-time dashboards plus call, user and number reports track connect rates and team performance. Native integrations with HubSpot, Salesforce, Zoho, Pipedrive, Freshdesk, Slack and Zapier, with an open API and webhooks, sync every call automatically. GDPR-aligned, encrypted and role-based from day one.Starting Price: $16/month
