Alternatives to Firefox Relay
Compare Firefox Relay alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Firefox Relay in 2026. Compare features, ratings, user reviews, pricing, and more from Firefox Relay competitors and alternatives in order to make an informed decision for your business.
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1
Greatmail
Greatmail
Dependable cloud based email hosting with spam filtering, antivirus protection, generous storage and webmail. Compatible with Outlook and all other POP3/IMAP clients. High volume SMTP service for responsible senders. Outbound relay service for transactional messages, email marketing campaigns, newsletters and other applications. Dedicated email servers, clustering and multiple IP load balancing for high volume senders. Fixed monthly cost with unlimited sending and reputation monitoring. Greatmail is an email service provider (ESP) specializing in business class email hosting, SMTP hosting and email servers. For ISPs, application programmers and cloud developers, we also provide custom solutions including dedicated IP servers and process specific, load balanced configurations with multiple servers. -
2
Trustifi
Trustifi
Trustifi offers industry-leading solutions for email security that helps small, mid-size, and enterprise organizations manage threat detection, regulatory compliance, data encryption & more. Easily deployed on: Outlook, Gmail, or any email server by relay **Advanced Threat Protection**: -Malware and ransomware virus detection, BEC attack prevention and alerts **Data Loss Prevention**: -100% compliant with HIPAA/HITECH, PII, GDPR, FSA, FINRA, LGPD, CCPA, and more **Encryption**: -NSA-grade. Select Enterprise customers have access to company branding and product white labeling. Plus one-on-one team training. Encryption needs aren’t one-size-fits-all, so your email security platform shouldn’t be either. Customized solutions are available upon request, often without charge. -
3
SMTP.com
Ziff Davis
Reliable SMTP relay and email delivery services. Powerful email delivery services that enable you to send and track high volume emails effortlessly. Integrate and start sending in minutes. All your transactional, email relay and email delivery needs under one roof. Whether you need a low-latency email delivery provider for your transactional emails, scalable infrastructure for high-volume sends or reliable backend solution for your marketing campaigns, SMTP is built to deliver. Reputation Defender is SMTP’s proprietary technology that uses big data to proactively monitor your email list health and safeguard your domain and IP reputation among ISPs by suppressing bad emails in your sends from hard and soft bounces. This ensures your delivery rates and inbox placement incrementally gets better over time.Starting Price: $25 per month -
4
Shroud.email
Shroud.email
Your email address is your ID on the web. Keep it private with aliases that forward messages to your inbox, minus the trackers. The next time a website asks for your email, use Shroud.email to create a unique alias that hides your identity. All emails sent to your aliases will be forwarded on to your real email address. You never need to give out your real address again. Our advanced tracker blocking strips out trackers from your emails, so the sender can't snoop on your inbox. When you no longer need an alias, you can simply delete it. Or if there's just a single sender who's bugging you, you can block them!Starting Price: $2.48 per month -
5
SimpleLogin
Proton AG
With email aliases, you can be anonymous online and protect your inbox against spam and phishing. Open-source. Made and hosted in Europe. Next time a website asks for your email address, give an alias instead of your real email. Emails sent to an alias are forwarded to your inbox without the sender knowing anything. Just hit "reply" if you want to reply to a forwarded email, the reply is sent from your alias and your real email stays hidden. You can also easily send emails from your alias. Quickly create an alias on the go. Sign up for a newsletter, and create a new online account with a click. Built upon open-source technology, all SimpleLogin components are also open-source. Not only can an alias receive emails, but it can also send emails. An alias is a full-fledged email address. Manage your aliases on the SimpleLogin website or on our Chrome, Firefox, and Safari extensions. Or on your phone with Android (Play Store, F-Droid) and iOS apps.Starting Price: $4 per month -
6
Alias Email
Alias Email
Alias Email is a privacy-focused email forwarding service. Create email aliases in one click - unique and anonymous email addresses that forward to your real inbox. Use them for newsletters, signing up on websites, or managing different roles in your work. Stay organized and secure without revealing your personal email! Alias Email is perfect for: - Privacy: keep your personal email invisible from third parties and data brokers; - Spam control: use a unique alias for every service. If spam arrives, you can disable this alias; - Inbox organization: route messages by alias, making it easy to filter and manage communication; - Easy to use: no complex setup, no apps to install - aliases that work anywhere, instantly. Alias Email doesn’t store your messages and never sells your data. Our mission is clear: to give you back control of your email identity in a world that increasingly profits from it.Starting Price: $4.99/user/month -
7
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 -
8
GroupList
Thexyz
GroupList is an email forwarding service that gives you an email address that you keep for life. We call these aliases and you can use them to protect or mask you real email address. Anything sent to your alias, is forwarded to your real email address. We also offer a group email list feature for free too. This allows you to sent out announcement to a group and control how to handle replies. We offer a paid service and power our notifications with Amazon to ensure they are low cost. Our mission is to build the world’s most simple and reliable group email platform — we make group email available to everyone who needs it. We help make it easier to send notifications and larger amounts of email to groups for a low cost. The grouplist.io domain is used for transactional email notifications, personal email hosting, group email lists, and free email forwarding (aliases).Starting Price: $2.95 per user, per month -
9
Email Monster
Email Monster
Email Monster consolidates emails from multiple senders or aliases into a single digest, delivered weekly or monthly, effectively reducing inbox clutter. This feature is part of a broader service offering unlimited temporary email addresses that forward to your real email, enhancing privacy and allowing you to control who can contact you without exposing your primary email address. These temporary addresses can be easily created or deactivated, providing a flexible solution to manage spam and keep your inbox organized.Starting Price: $0 -
10
ALTOSPAM
OKTEY
This antispam and antivirus software is an online filtering bridge that quickly free you from the waste of time and expenses generated by the flooding of undesirable e-mails. ALTOSPAM is an integrated SaaS software protecting your email from spams, viruses, scams and phishing. It allows companies owning at least one domain name to secure its email servers. ALTOSPAM combines 16 anti-spams technologies, 6 anti-viruses as well as other security services such as anti-relay, anti-scam, anti-phishing and protection against denial-of-service attacks. In addition, this externalized antispam and antivirus software ensures a very high availability of you email services. Altospam is a full-service corporate email protection, integrating multiple security levels for your emails. ALTOSPAM not only blocks most unwanted emails, but mostly its antispam software has been designed to minimize false positives.Starting Price: $7 per user per month -
11
Atomic Mail
Atomic Mail
Atomic Mail is a secure and user-centric email hosting provider, dedicated to offering privacy-first email services. With features such as alias creation, robust security measures, and seamless account recovery, AtomicMail ensures your email experience is both private and hassle-free. Creation of Aliases (Hide-my-email): Maintain your privacy by creating multiple email aliases; Spam Free, No Ads; Email Password Protection; End-to-End Encryption: only you and your intended recipient can read the message; Zero Access Encryption: Atomic Mail cannot access your emails; Account Recovery with Seed Phrase: Recover access to your account with a unique seed phrase. Can regain control of your email account without compromising security.Starting Price: $0 -
12
OutboundSMTP
OutboundSMTP
DKIM Signing improves the inbox placement of mailbox providers like Gmail, Office365. Multiple Servers in the USA and Europe for increased reliability. No more headaches of managing and maintaining your own email server and IP reputation. Create SPF and DKIM records for your domain names, no prior experience required. If you are suffering from an IP blacklisting our SMTP relay service can solve your reputation problems. 24×7 technical support via phone, chat or email. We are here to ensure your mail gets delivered. you’ll be able to deliver your mail reliably to the inbox. We optimize our sending routes and closely monitor our IP reputations to ensure you the best possible service. We have a Zero Spam Policy that allows us to block or restrict messages that would damage our reliability or the reputation of our customers. You may send from an unlimited number of “From” addresses or domains after you have verified your domain ownership via DNS.Starting Price: $4 per 2,500 messages -
13
anon.li
anon.li
anon.li offers private email aliasing & end-to-end encrypted file sharing. Hide your email from spam & hackers by creating an alias through our website, API, CLI or browser extension in less than 30 seconds. Securely share files using client side AES-256-GCM encryption up to 250GB in size. Only you and people you give the link to can see the files.Starting Price: $0 -
14
RelayFax
Alt-N Technologies
RelayFax is a powerful email-to-fax and fax-to-email fax server. RelayFax automates the process of sending, receiving, and managing your network fax traffic. By integrating into existing email systems, RelayFax provides full faxing capabilities from your desktop. RelayFax Network Fax Manager makes sending and receiving faxes from your desktop simple and efficient. RelayFax supports a wide variety of environments and configurations, including support for SSL and TLS, Direct Inward Dialing (DID) routing support, and support for TWAIN compatible devices such as scanners and digital cameras. Many types of fax modems are supported, or you can send and receive faxes without a fax modem using Fax-Over-IP (FOIP). RelayFax Network Fax Manager can automate many faxing related activities, including modem detection, fax scheduling, and inbound fax routing. Optical Character Recognition (OCR) and routing rules can be configured to work together for quick faxing of scanned documents. -
15
Relay
Relay Network
Relay Network is redefining customer engagement through its innovative Business Feed Platform, a personalized B2C communication channel inspired by the familiar scrolling feed experience. By combining the interactivity of mobile feeds with the immediacy of SMS, Relay connects businesses with customers in a timely, relevant, and secure way—no logins or app downloads required. The platform supports multimedia content, forms, e-signatures, and two-way chat, giving users countless ways to interact directly within their personalized feed. Relay’s solution is fully HIPAA, SOC 2, TCPA, and HITRUST compliant, making it ideal for industries that handle sensitive information such as healthcare, finance, and membership organizations. Businesses using Relay see major improvements in engagement, conversions, and digital adoption compared to traditional communication channels like email and portals. Overall, Relay helps organizations deliver the right message at the right time. -
16
Bulk Response
Bulk Response
BulkResponse is the only Bulk Email Program along with Mass Email Marketing services that allow it's users to import unlimited contacts. Established Since 2009, BulkResponse has helped thousands of customers till date achieved their Email Marketing goals. If you want to send transactional emails and email marketing campaigns, then bulk response is all you need. You come across a lot of options when it comes to SMTP Relay Service Providers, but BulkResponse is the cheapest in price yet equally good in service quality. With BulkResponse, you can send marketing and transactional emails to millions of people in your mailing list while bypassing your own email server. With BulkResponse SMTP Relay Service, you can have Real-Time Email Tracking, Advanced Analytics for your email campaigns, Detailed Logs to Diagnose Email Delivery Failures, Increased Deliverability Features that help in reducing bounce rates and spam complaints as well as Email Address Validation Service.Starting Price: $35 per month -
17
SKBD
SKBD
SKBD hooks you up with custom email aliases that forward mail to your main inbox, so you only receive what matters to keep your personal email private and secure. We strip tracking from emails, keep a record of blocked emails in case you need to retrieve them, and allow you to block senders at the domain level and the email level -
18
SendVerify
SendVerify
Email API and SMTP relay to not just send and measure email sending, but also alert and optimize. We provide you with the tools, expertise, and support needed to reliably deliver emails to your customer's inboxes on time, every time. Powerful email marketing software to send campaigns, build your list, and automate your marketing. Improve the deliverability of your email list by automatically cleaning all emails before sending them. -
19
Incogneato
Corpell
Set up a box by simply asking a question and providing your email address. Check your email to get your box link and share it wherever you want to collect feedback. View the responses from your dashboard and even respond anonymously to those who provided an email address (you’ll never see the address as we relay encrypted messages back and forth). We use 256-bit SSL encryption for all communication within Incogneato. That means only our server can understand what’s being discussed. Anyone who tries to intercept information will simply see unreadable data. We encrypt respondents' email addresses (if they choose to include one). In the unlikely event that our database is broken into, your respondent’s email address will be unreadable. Other than an encrypted email address (if they choose to include one), we do not retain any personal identifying information of those submitting a response.Starting Price: $9 per month -
20
Microsoft SMTP Service
Microsoft
Microsoft SMTP Service is a mail server software that enables Microsoft Windows Server operating systems to send and receive emails. It is a component of Internet Information Services (IIS) and is used to relay emails between mail servers. Microsoft SMTP Service is a popular choice for organizations that need a reliable and scalable mail server solution. It is easy to install and configure and can be used with a variety of email clients. Microsoft SMTP Service supports a number of features, including: Relaying emails between mail servers: Microsoft SMTP Service can relay emails between mail servers, which means that it can be used to send and receive emails for multiple domains. Supporting multiple email clients: Microsoft SMTP Service can be used with a variety of email clients, including Microsoft Outlook, Mozilla Thunderbird, and Apple Mail. Providing security features: Microsoft SMTP Service provides a number of security features, such as authentication and encryption -
21
SendHealth
SendHealth
We generate an extensive report on sending IP, domain, their blacklist data, Content spam score, DNS records alignment for inboxing your emails. Once you have sent the email, start the diagnosis and we generate the report for you to understand and debug your email lords. Use your email marketing tool, ESP, API, or your GSuite/Zoho workspace to send an email to the recipient provided by us. The blacklist looks for domains in the email body that have been a known source for spammers. These domains will not be just in an initial link but in the final redirected link too. RBL and DNSBL are used to identify whether the IP of the sending server is an open relay that has been used by spammers or is by an ESP that allows spammers to use their infrastructure. -
22
Sasquatch Mail
Sasquatch Mail
A mail forwarding service allows an individual or business to have mail delivered to a purchased address and then relayed, either physically or digitally, to a designated address. Mail forwarding is a common business practice utilized to maintain privacy and security. The need for a mail forwarding address is also common with business travelers, globetrotters, expats, college students, home business owners and privacy guardians. You can obtain mail forwarding services from a post office, but it is not quite the same as a private mail forwarding service. You will receive extensive, customized services with private mail forwarding services like Sasquatch Mail. All mailing address plans come with the option of your envelopes' contents being scanned and uploaded online. This means that we open mail received and scan it to your online digital mailbox, which makes sorting your mail like sorting through email.Starting Price: $9.99 per month -
23
nostr
nostr
The open protocol that creates a censorship-resistant global "social" network is based on cryptographic keys and signatures, making it tamperproof. It does not rely on any central server or P2P techniques and is resilient as a result. Everyone runs a client, which can be a native or web version, to publish posts that are signed with their key and sent to multiple relays. Updates from other users are requested by asking multiple relays if they have any information about those users. Any individual can run a relay, which simply accepts and forwards posts without requiring trust. Verification of signatures occurs on the client side.Starting Price: Free -
24
AutoSend
AutoSend
AutoSend is a lightweight, cloud-based email delivery platform built to send and track transactional messages (like magic links, verification codes, and confirmations) and marketing campaigns with reliable deliverability and strong inbox placement; it provides a simple RESTful Email API with SDKs for multiple languages, SMTP relay support, and webhooks for event-driven workflows that let developers integrate email into apps quickly and reliably. It also offers tools for reusable templates, contact lists, and segmentation, campaign creation, email automations, real-time logs, deliverability analytics, and engagement tracking so teams can monitor delivery status, opens, clicks, bounces, and suppressions. AutoSend integrates intuitive dashboards that modernize both developer and marketer workflows with features such as migration support from other providers, dynamic suppression lists, personalization, and automation builders, helping organizations streamline email communication.Starting Price: $1 per month -
25
Relay
Relay.app
Relay automates more of your work than any other tool by combining AI assistance, human-in-the-loop collaboration, and a multiplayer experience. Embed AI in any workflow, no prompts needed. Generate content for templated messages, extract information from incoming emails, summarize user feedback, classify customer support tickets, and more. Some workflows shouldn’t be 100% automated–you need a human in the loop. Relay makes it easy to involve your team when you need it. Approve critical automation before it runs, review the work of AI, and add a personal touch to outgoing communications.Starting Price: $9 per user per month -
26
Relay
Relay
Relay is the cloud platform for frontline teams. Tailored for frontline teams, Relay is an innovative platform that combines hardware, cloud software, and mobile connectivity. Relay bridges the gaps between devices and languages, offering a seamless communication experience nationwide, making it easier than ever to connect with others. Relay’s platform ensures frontline team safety with emergency alerts, real-time location, two-way communication, and a commitment to brand safety compliance. Relay’s platform is your path to team optimization, offering operational insights that enable your team to work smarter and achieve greater efficiency. Bulky and slow, radios can only communicate with other radios and range limitations can leave team members out of reach. Distracting and sometimes dangerous, phones require your head down, focused on a screen, and cannot communicate with two-way radios. -
27
Tefter
Tefter
Tefter for Teams. Get your team on the same page faster with lightning-speed access to all your important links, from any device and Slack. Omni. Our browser extension codenamed Omni, is a combination of a tab switcher and a history search engine with powerful bookmarking support. With Omni, team members have instant access to the team's bookmarks. Aliases. Set up convenient shortcuts and leverage commands like /go, any link will be at your fingertips. Hit alt + a in Omni or simply type go <alias> in your browser's address bar. Replace recurring questions, like “What's the standup link?” with /go standup. Slack integration. Install our Slack app and members of your workspace can add bookmarks, search and create shorthand aliases for links. One may also invoke an action to scan a message for links and add them as bookmarks. Tefter is and will remain free for open-source teams.Starting Price: $9 per user, per year -
28
Agari
Fortra
Use Trusted Email Identity to protect workers and customers from advanced email attacks. Advanced email attacks target a major security vulnerability that legacy email security controls do not address. Agari gives employees, customers, and partners the confidence to trust their inbox. Unique AI with over 300m daily machine learning model updates understands the good to protect you from the bad. Global intelligence powered by trillions of global email messages provide deep insights into behaviors and relationships. Years of experience defining the email security standards that have been adopted by Global 2000 companies. -
29
MailerLogic
MailerLogic
MailerLogic is an Enterprise Email Delivery Platform combining ESP-grade infrastructure with real-time deliverability intelligence. It bridges the gap between transactional APIs and bulk sending, ensuring emails land in the inbox, not spam. Key Functionality: 1. Smart Routing: Separates transactional and bulk streams automatically to keep priority mail fast and reputation high. 2. Email Validation: Real-time syntax, domain, and risk checks to reduce hard bounces before sending. 3. Deliverability Tools: Content scoring (spam-risk preview), abuse prevention, and a live 0–100 Health Score for reputation monitoring. 4. Developer-First API: Clean REST endpoints and SMTP relay with SDK examples for Node, Python, and cURL. 5. Webhooks & Analytics: Real-time event notifications (delivered, opened, bounced) and aggregated statistics APIs for external dashboards. 6. Automated Compliance: Built-in suppression list management for unsubscribes and bounces at the transmission layer.Starting Price: $9/month -
30
Elastic Email
Elastic Email
Tens of thousands of companies already send their emails with Elastic Email. An amazing Email Marketing platform, built on the most cost-effective Email API. Deliverability, reliability and scalability matter. Easily connect and send your email via our HTTP API or SMTP relay and scale to 100+ million emails per month on our ultra-fast global infrastructure. Build better relationships with your recipients with every campaign you send. Elastic Email provides all the marketing tools you need to help your contacts feel connected. Deliverability, reliability, and scalability matter. Easily connect and send your email via our HTTP API or SMTP relay and scale to 100+ million emails per month on our ultra-fast global infrastructure. Get the most out of your email marketing. Create beautiful emails, send newsletters, and automate your campaigns in a flash.Starting Price: $5 one-time payment -
31
Selectron Relay
Selectron Technologies
Relay is a powerful self-service application suite. With a single platform, governments can connect the work of their agencies in one location, coordinating and amplifying their impact through automation, data analysis, and engagement. For agencies, Relay’s centralized, connected approach to automated customer service frees up staff time, lowers costs, and increases the quality of customer service. For citizens, they receive the convenience and ease of accessing their data when, where, and how they want. Relay Portal is a powerful administrative and data management tool that provides real-time health statistics, detailed reports, outbound campaign management, configuration options, and more, all through a user-friendly dashboard. Payments for agencies using our solutions are PCI compliant and PA-DSS validated. By meeting the highest standards for payment security, agencies and their customers can feel confident knowing their data is protected. -
32
UserCheck
UserCheck
UserCheck is a real-time email validation API that detects and blocks disposable, temporary, and suspicious email addresses and domains so tools can focus on genuine users and reduce fake sign-ups and abuse. It verifies whether an email or domain is valid, active, and trustworthy, checks domain reputation, identifies public email providers, relays, role accounts, and offers smart suggestions for common typos, syntax validation, and bulk processing of large lists. UserCheck continuously updates its disposable email database and enhanced validation rules, and it integrates seamlessly via a simple REST API with predictable JSON responses for efficient, low-latency verification workflows. It scales to handle high volumes of requests without performance degradation and offers organizational features like environment separation for development, staging, and production workflows. Additional capabilities include custom blocklists, webhooks, and integrations with tools.Starting Price: Free -
33
SimpleURL
SimpleURL
SimpleURL offers a fast and free way to turn long, messy URLs into clean, memorable short links. With our public URL shortener, you can create custom aliases, share links anywhere, and track clicks with built-in analytics — all without creating an account. Whether you’re sharing on social media, sending in emails, or posting in online forums, our tool makes your links look professional and easy to remember. Just paste your long URL, choose a short alias, and start sharing instantly. -
34
Labnify
Labnify
Labnify provisions email API and SMTP-integrated mailer so you won't need any of those pesky SMTP credentials. A system that delivers and track mass emails reliably enriched with features like real-time analytics, open/click metrics, bounce/spam tracking, template builder, and more. No one likes being blacklisted. That's why our innovative blacklist monitoring feature keeps a watchful eye on your sending reputation, ensuring your emails always land in the recipient's inbox. Plus, Labnify takes email authentication seriously, utilizing DKIM/SPF authentication to enhance your deliverability and add that extra layer of security. Millions of emails have relayed via Labnify as it's easy to work with. Simply import your email list and hit SEND without the need for an SMTP credential, making it a 2-in-1 email marketing stack. Built on the most cost-effective Email API, deliverability and scalability matter. Easily connect and send your email using our automated system and scale.Starting Price: $99/month -
35
Relay
Relay Technologies
Relay is a tech-enabled delivery network, empowers businesses to grow and elevate their ecommerce operations. Our technology-first delivery model is built for efficiency, scalability, and convenience. With an API-first technology platform, purpose-built for e-commerce, Relay’s platform is built to deliver optimal efficiency leveraging a data-driven approach. Thanks to the Relay solution, Retailers will be able to monitor parcel journeys from start to finish through live-tracking and routing optimization features, as well as our interactive performance dashboards. Discover what industry leaders partnering with Relay are saying about us and how they leverage our best-in-class delivery network to deliver results. With next-day delivery expertise, competitive pricing and a sustainability-focused core, find out how we can help you grow your business whilst delighting your customers. -
36
Smartlockr
Smartlockr
Smartlockr is a people-centric data security platform to easily enable secure email and file sharing for an entire organization. Smartlockr prevents data leaks by keeping user-friendliness in mind with everything we do. By eliminating the human error, we ensure your workforce is your strongest asset in preventing data leaks. Smartlockr can be customized for each organization, so that every employee can continue to work with the (email) systems they are used to. Smartlockr can be used with almost every operating system and device. It is available as a plug-in for Microsoft 365 (Outlook), it can be integrated into existing systems and an SMTP relay service can be used too. Even a combination is possible if required. Smartlockr can also be used to securely send and receive large files of up to 5 TB. Smartlockr is compliant with all privacy regulations and security standards like GDPR, ISO, NTA 7516.Starting Price: €0.42 / month / user -
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Migomail
Migomail
Using an SMTP relay service like Miogmail is the simplest way to get started sending marketing and transactional emails. Send emails as per specific action or send series based bulk email relentlessly. Design creative customize email templates using drag-drop editor or use readymade responsive template. Security is Security is first priority, secure email infrastructure integration with SSL, DKIM, DMARC, SPF, SSL, TLS. Increase your email delivery with advanced management tools and Dedicated IP address. Create professional-looking personalized transactional, promotional and newsletter email. Utilize transactional/promotional SMTP or SMTP API to send bulk email. -
38
BetterVoice
Voyant
Everything you need in a Business Class phone system. No hardware or additional services required. Set up only takes 5 minutes! You can be set-up in less than 5 minutes! We walk you through the simple process. You can make outbound calls from any of your numbers using our Mobile app or Web Dashboard. Calls can be automatically forwarded to team members when you can't answer your phone. Team members can share a voicemail inbox so calls can be responded to faster. Voicemail transcripts save you time when relaying information to other team members and assistants. Transcripts can easily be imported into your CRM or emailed. Automatically respond to inbound text messages that contain certain keywords. Want to use a soft or VoIP phone with Better Voice? Go ahead! You can easily configure SIP Extensions in your account.Starting Price: $20 per month -
39
Photon Console
Photon Console
Photon Console is an email delivery platform built on the cloud that helps businesses communicate effectively with their target audience by providing them with a dependable email transaction & marketing infrastructure. The platform allows users to send emails via SMTP relay or send emails using an API for OTP, password reset, notification purposes, newsletters and marketing campaigns. As part of this platform, users receive real-time statistics about email delivery, bounce-back reports, as well as ability to authenticate their domain names using SPF, DKIM and DMARC records thereby increasing inbox placement ranks and sender reputation. Photon Console was originally designed for new businesses, SaaS businesses, and small to medium-sized businesses that are growing fast; it provides a robust email infrastructure while also providing easy access through a simple dashboard, so customers can easily monitor performance of their email communications and manage them efficiently. -
40
GMX
GMX
What makes GMX stand above other free email providers? We ensure that your email and other data is safe at all times with powerful antivirus protection and spam filters. And for even more peace of mind, you can activate email encryption and two-factor authentication. Need more than one email address? No problem – you can create up to ten in a single account and manage all these alias addresses in a single inbox. Additionally, GMX will help you stay organized with an easy-to-use online calendar and address book. Finally, with access through any computer using our webmail feature and on all your devices with our mobile apps, you can be sure that you are always in touch with those who matter most. GMX prides itself on providing unparalleled email services to each and every user. We are constantly developing new and exciting features that make our email accounts stand out from the crowd.Starting Price: Free -
41
Relay
Boomtown Network
Relay makes it simple to sell, activate and service business technology products at scale. With a single Smart Inbox, an integrated knowledge base and seamless collaboration, your team is more efficient and can focus on helping customers instead of dealing with multiple and disconnected workflows. It’s time for a system that gets smarter every time you use it. Relay uses machine learning and universal technology data to drive intelligent automation that creates more powerful agents while reducing the number of questions they get from customers. Who said you can’t be personal at scale? Let your customers talk with you however and wherever and give your agents the complete context they need to respond quickly and treat every customer as an individual, not a ticket.Starting Price: $200.00/month -
42
Webhook Relay
Webhook Relay
Webhook Relay is a secure tunneling and webhook forwarding platform that lets teams receive webhooks from any source on localhost, on-premise systems, private networks, laptops, Kubernetes clusters, and internal services without exposing private IPs or opening inbound firewall ports. Its main services include Webhook Forwarding, which is secure and unidirectional by default with optional request and response transformation, and Bidirectional Tunneling, which provides fast tunnels for direct access to any HTTP service, internal API, website, backend app, frontend app, or AI model. Users can create public Webhook Relay endpoints, specify one or more internal destinations, run the relay agent through CLI or Docker, and securely tunnel incoming webhooks to private targets. It supports real-time payload and response inspection, request forwarding to multiple destinations, static outgoing IPs for allowlisting, custom subdomains, non-expiring tunnel domains, encrypted tunnels, etc.Starting Price: $8.99 per month -
43
KumoMTA
Kumo Corp
KumoMTA is an Open-Source, enterprise-grade email message transfer agent (MTA) software for sending high-volume, business-critical emails. KumoMTA is typically chosen by high-volume email users looking to replace PowerMTA, Momentum, or traditional Open Source MTAs. KumoMTA offers high-performance message relay to the tune of millions of messages per hour per server, combined with extreme flexibility and configurability through its use of a Lua scripting engine for configuration and message management. For more information on KumoMTA see our Sourceforge project page.Starting Price: $0 -
44
Warmup Inbox
Warmup Inbox
Warmup Inbox automatically raises your email sending reputation through our network of inboxes that talk to each other. The process of preparing an email address for general use or email outreach is commonly referred to as “Warming Up” an inbox, where you take a number of steps to ensure that an email address does not become deactivated, blacklisted, or automatically marked as spam when it begins to send outgoing messages to other recipients. This process is typically done with newly created email addresses but also benefits older email addresses who have been having issues with email deliverability, in that a noticeable portion of their outgoing mail is either landing in a spam folder or blocked entirely by an email server due to either being blacklisted or associated with a domain that has a poor reputation. Warming Up an email inbox essentially is recreating the way a typical person will use an email address.Starting Price: $19 per inbox per month -
45
Message Mate
OwnerListens
Messaging is the world's most loved and fastest growing communications method (Economist). If you're not messaging with your customers, you are missing out on the biggest customer engagement shift since the invention of email. We make it easy for customers and businesses to directly message each other. Secure, scalable, powerful. With Message Mate on your site, shoppers can effortlessly text your company so your agents can help navigate them to completing their purchase in real time. Customer messages are then relayed to your team in real time. Increasing conversions can really be as simple as making it dead easy to reach you and lend a helping. No matter how the response is sent, customers receive it via text so they feel like they are having a personal conversation with your business. Messages can be sent to multiple responders using email, SMS, or a web dashboard.Starting Price: $30 per month -
46
MailThis.to
MailThis.to
MailThis.to has a memorable API that doesn't need extensive documentation. You'll remember it when you need it, and you can Google the details. Build your first form in seconds, remember it forever. Spam Filtering, Form customization, and file uploads are all supported. Your first 250 emails are free, then just $5 per thousand emails. Create an alias to avoid exposing your email address to the world. Create a form using HTML, a form builder, or use Javascript to generate POST requests that land in your inbox. Each time your form is submitted, you'll get an email! You'll have to verify the first one, and each visitor will need to verify with reCAPTCHA to prevent spam. Use MailThis.to for up to 250 emails without signing up, completely free. Since 2014, MailThis.to has provided thousands of users with a simple form to mail API, with millions of emails sent. We're looking to handling your mail!Starting Price: $5 per thousand emails -
47
Relay
Relay
Expand your reach without sacrificing your margins! Relay delivers orders from all your platforms so that you can keep using third-party apps for your restaurant’s marketing, while cutting your delivery commissions. Stop letting third-party apps eat your margins while overcharging your customers. With Relay as your fulfilment partner, you could reduce your commissions by up to 75%. No more juggling multiple apps and devices. We can set you up with a unified management system that aggregates phone-orders, orders from your website, and integrates with all the most popular delivery apps overnight! Talk to one of our specialists about your restaurant's needs, and they will walk you through Relay’s technology and services. Unselect the delivery option from third-party platforms. Continue to receive orders from 3rd party delivery platforms but use Relay for a more affordable and consistent delivery option. -
48
OpenMail
OpenMail
OpenMail gives AI agents a dedicated email address. Provision an inbox with one CLI command or API call, each agent gets its own address, not a shared inbox or forwarding alias. Inbound email arrives instantly via webhook or WebSocket, parsed and threaded, with no polling required. Replies land in context so agents can respond without any new interface on the human side. Attachments: PDFs, CSVs, images, spreadsheets, Word documents are automatically converted to LLM-ready text; the agent never touches raw MIME. The API is small by design: one call to provision, standard calls to send, webhooks or WebSocket to receive. Integrates with LangChain, n8n, Make, Vercel AI SDK, and OpenClaw. Custom domains supported. Runs in the EU, GDPR-covered, 99.9% uptime SLA, SOC 2 in progress.Starting Price: 9 EUR -
49
Relay
Relay Financial
Relay is an online business banking and money-management platform that gives small businesses full control over their cash flow by combining banking, expense management, bill pay, invoicing, and financial automation. With Relay, businesses can create up to 20 separate checking accounts and two savings accounts, issue physical and virtual debit or credit cards (with spend controls), and accept or send payments via ACH transfers, wires, and checks, including deposits from platforms like PayPal, Stripe, or Square. It lets businesses organize income and expenses across different categories, automate transfers between accounts by dollar or percentage, and allocate funds to taxes, payroll, savings, or profit automatically. Relay also supports billing workflows and vendor payments: you can upload or email bills (or sync from accounting software), approve them with customizable approval rules, and pay via ACH, wire, or check directly from the platform.Starting Price: $30 per month -
50
Hexamail Guard
Hexamail
Hexamail Guard is your ultimate defense against email-based threats. With an array of advanced security features, it ensures that your inbox remains secure and your business stays protected. Protect your email infrastructure with our innovative multi-layer filtering technology. Secure your business communications, enhance productivity, and achieve peace of mind with Hexamail Guard. Intelligent Threat Detection:Hexamail Guard employs cutting-edge algorithms to proactively identify and block spam, viruses, phishing attempts, and other malicious content. Rest easy, knowing that only legitimate emails reach your employees' inboxes. Real-time Threat Analysis:Stay one step ahead with Hexamail Guard's real-time threat analysis. Our system continuously scans incoming emails for emerging threats, ensuring prompt detection and response to evolving security risks. Customizable Rule Sets:Tailor Hexamail Guard to your specific security needs.Starting Price: $224/10 users