Alternatives to SMTP Senpai
Compare SMTP Senpai alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to SMTP Senpai in 2026. Compare features, ratings, user reviews, pricing, and more from SMTP Senpai competitors and alternatives in order to make an informed decision for your business.
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1
SendGrid
Twilio SendGrid
Email is the backbone of your customer engagement. The Twilio SendGrid Email API is the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise. Our flexible Email API and proprietary Mail Transfer Agent (MTA), intuitive console, powerful features, and email experts make it easy to ensure all your email gets delivered in seconds and without interruption. Monitor engagement data and optimize deliverability with our Deliverability Insights dashboard. Whether you’re sending 100 emails or 100 billion, SendGrid is built to scale. Integrate with our RESTful APIs and SMTP in minutes, with sample code libraries available in 7 languages, interactive docs, templates, and more.Starting Price: $19.95 per month -
2
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 -
3
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.Starting Price: $9.75/month -
4
SMTP2GO
SMTP2GO
Send and track all emails easily and securely with SMTP2GO, a reliable outgoing email service solution. SMTP2GO features a redundant, multi data center infrastructure that allows users to send emails even if there is a major internet outage. SMTP2GO has features like real-time analytics, bounce/spam tracking, weekly summaries, spamtrap detection, blacklist monitoring, DKIM/SPF, and more.Starting Price: $10 per month -
5
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. -
6
Volanea
Volanea
Volanea is an email platform that combines transactional and marketing email in one product, so teams don't pay for two separate vendors. Built on Amazon SES, it provides a REST API and SMTP relay for transactional sends — password resets, receipts, OTPs, alerts — with delivery, bounce, complaint, open and click tracking on every message. For marketing, there's a drag-and-drop template builder, contact lists with segmentation, campaign scheduling, and event-triggered automated workflows. Deliverability is first-class: custom sending domains with your own DKIM keys (BYODKIM), SPF/DMARC setup guidance, shared or dedicated IPs with automated warmup, and reputation monitoring that throttles sending before bounce or complaint rates damage your domain. Templates, campaigns and workflows are separate reusable objects, so one template can serve both an API call and a broadcast. Pricing is credit-based — you pay for emails sent, not contacts stored.Starting Price: $5/month -
7
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. -
8
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 -
9
Kingmailer
KingSMTP.com
KingSMTP.com (formerly known as Kingmailer.co, founded in 2017) is a Transactional SMTP service provider. It’s designed to help businesses reliably send emails such as order confirmations, password resets, or notifications, but it’s not intended for mass email campaigns or marketing.Starting Price: $0 per month -
10
turboSMTP
turboSMTP
TurboSMTP understands that email is not just a means of communication but the backbone of your customer engagement strategy. TurboSMTP Email API is trusted by developers and marketers alike for its time-saving features, scalability, and delivery expertise. Our service offers a flexible SMTP relay solution along with advanced features tailored to meet the needs of businesses of all sizes. With our intuitive dashboard, powerful features, and dedicated support, ensuring the delivery of your emails is seamless and uninterrupted. TurboSMTP's infrastructure is built to scale, whether you're sending a few hundred emails or millions. Integration with our service is effortless, with sample code libraries available in multiple languages, interactive documentation, and customizable templates. Monitor engagement data and optimize deliverability with our comprehensive reporting tools. Trust TurboSMTP to deliver your emails reliably and efficiently, empowering you to engage with your audience.Starting Price: $14.95 per month -
11
Cllavio
Cllavio
Cllavio is a high-deliverability email marketing and transactional email platform designed for startups and growing businesses. It includes a fast campaign builder, a powerful SMTP and REST API, clear analytics, AI-powered spam detection, and domain warming tools to help your messages reach inboxes. With automated bounce monitoring, DKIM/SPF/DMARC validation, Shopify integrations, and predictable pricing, Cllavio makes it easy to send newsletters, cold emails, bulk campaigns, and transactional notifications from a single dashboard. It's designed for teams that want speed, reliability, and scalable email delivery without the enterprise complexity.Starting Price: $9.99 -
12
Maileroo
Maileroo
At Maileroo, we provide a powerful platform for both SMTP relay and email marketing. We ensure fast, reliable email sending with real-time tracking of deliveries, clicks, opens, and bounce rates. With our free Email Verification API, dedicated IPs, and DNS Records for sender authentication, we help reduce bounced emails and improve deliverability. Our email marketing platform makes it easy to create and manage campaigns. You can personalize emails, use our drag-and-drop email templates, form builders, and flexible Contacts API. We provide real-time statistics and in-depth analytics to help you optimize your campaigns and boost engagement. We also offer seamless DNS setup, automation tools, multi-sender identities, and efficient contact management. Whether you're a small business or growing enterprise, Maileroo offers budget-friendly pricing and everything you need to scale your email marketing, making it a smart choice for businesses of all sizes.Starting Price: $10 per month (25,000 emails) -
13
Alibaba Cloud Direct Mail
Alibaba Cloud
Direct Mail is a simple and efficient service to send email notifications and batch email quickly and efficiently without the need to build your own email server. Direct Mail is a key product for serving Alibaba's own e-commerce platforms, which includes servicing Alibaba's record-breaking annual sales festival. Tens of millions of emails are sent every day through Direct Mail by Alibaba and Alibaba Cloud customers. Direct Mail guarantees stable and high conversion rates across various mail channels. Emails can be sent with the product console, API interface, and SMTP interface. Outbound mail redundancy is stored on multiple servers and databases to provide stability and scalability. Control mailing frequency with strategic mailing functionality. Includes registration confirmation, order confirmation, password reset, transaction notification, and more. Includes product promotions, journal subscriptions, and more.Starting Price: $1.99 per six months -
14
EmailLabs
Vercom
EmailLabs is part of the Vercom S.A Group, which implements technology solutions in the CPaaS model. We are a cloud SMTP server infrastructure: Cloud SMTP & Email API. With years of experience in sending to the most informed senders, we can make a measurable contribution to building email reputation and improving deliverability. We take care of standardization and security of both marketing, transactional and system messages of our customers. Thanks to the in-depth knowledge of our experts, we are able to prepare the infrastructure to ensure appropriate throughput and increase the sending speed for any market and any mailbox provider. Plug EmailLabs into your transactional sends - start sending in less than 5 minutes.Starting Price: Free -
15
HandySends
HandySends
Cloud Communication API integration platform helps you to integrate Email, SMS, and WhatsApp functionalities with a set of free software libraries. Intuitive on-brand triggered transactional email service with powerful API or SMTP servers and with a great email framework. Send a primitive, trustworthy, customized SMS with our Transactional SMS Service, perhaps the most impressive approach to reach your clients. Send messages securely, deliver notifications, customer care on the world’s most well-known messaging application WhatsApp with HandySends APIs and programming. Trim down your bounce rate to boost performance using our real-time Email validation API resulting in better delivery. -
16
Mailcot
Mailcot
Email Marketing Services allows your business to email the consumer whenever you want. While not every email needs to be a sales pitch, your contact with the customer should provide something of value to them. If you are looking for a Transactional SMTP service, then you probably have an application that sends out either marketing or transactional messages and is searching for a host to relay these messages in bulk. Create fully automated campaigns with the world’s most intuitive workflow builder. Apply tags, trigger campaigns, add delays, branch with if-then logic, and do about 30 other things. With powerful functionality that allows businesses to move quickly. Drive more sales with email marketing that really resonates. Nurturing your leads with our platform , give points and covert it from lead to customers.Starting Price: $7.19 per month -
17
Sweego
Mindbaz
Sweego is a multichannel (email & sms) notifications platform for developers. Sweego allows users to send transactional, engagement, and CRM messages through channels like email and SMS. The platform provides APIs and webhook system to integrate notifications and messaging capabilities into applications. (SAAS, Mobile, Desktop, whatever...) We offer SMTP Service or API to send emails or sms. We offer Inbound Email routing feature, we got email, parse it and deliver in JSON by webhook. With our email builder, you can create your template easily with drag and drop fonctionnality, HTML import, good email client compatibility, brand management, etc... Key features include message templates, email authentication, webhooks, sandbox testing for emails, statistics, logs and scalability.Starting Price: €10/month -
18
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 -
19
SendPulse
SendPulse
A multi-channel marketing automation platform designed to help marketers create personalized promotional campaigns. Users can choose between email, SMS, and web push notification or build an elaborate message sequence by combining several channels in a single campaign. When it comes to email marketing, the platform packs all the necessary tools to automate lead nurturing and lead generation. Users can create custom subscription forms and grow their mailing list. Intuitive drag and drop allows users to design mobile-friendly email templates or choose a predesigned one from a massive gallery. The company, also, offers a transactional email service that users can use to send up to 12000 free emails via SMTP or API. SendPulse has its own chatbot builder. Users can create a Facebook Messenger chatbot or a Telegram chatbot and use it to send personalized campaigns or as an autoresponder.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
Mailofly
Mailofly
Mailofly is a complete email infrastructure platform built for developers, SaaS companies, startups, and modern applications. Send and manage emails through a powerful REST API or SMTP without the complexity of building and maintaining your own email infrastructure. Mailofly supports transactional emails, marketing campaigns, email templates, delivery tracking, detailed logs, webhooks, inbound email routing, domain management, and audience management. Developers can easily integrate Mailofly into their applications and receive real-time delivery events through webhooks. With support for popular development environments and a developer-friendly workflow, Mailofly makes it simple to send, receive, monitor, and scale email from a single platform.Starting Price: $20/month -
22
Netcore Email API
Netcore
Choose the best email API or SMTP for the most robust email delivery experience. Netcore Email API (formerly known as Pepipost) provides a powerful transactional email delivery infrastructure and AI-powered inboxing which is reliable, scalable, secure and easy-to-use, at the most affordable pricing plans. We help brands to engage with their customers at the right moment with the right content over emails.Starting Price: $25 per month -
23
Amazon SES
Amazon
Amazon Simple Email Service (SES) is a cost-effective, flexible, and scalable email service that enables developers to send mail from within any application. You can configure Amazon SES quickly to support several email use cases, including transactional, marketing, or mass email communications. Amazon SES's flexible IP deployment and email authentication options help drive higher deliverability and protect sender reputation, while sending analytics measure the impact of each email. With Amazon SES, you can send email securely, globally, and at scale. Using either the Amazon SES console, APIs, or SMTP, you can configure email sending in minutes. Amazon SES also supports email receiving, enabling you to interact with your customers at scale. Regardless of use case or sending volume, you only pay for what you use with Amazon SES.Starting Price: $0.10 per month -
24
Mailchimp Transactional Email (Mandrill)
Mailchimp
Transactional emails: Reach inboxes when it matters most. Deliver fast, personalized transactional emails using API or SMTP. Get the benefits of our experience sending billions of emails globally. Send personalized transactional emails that reach inboxes, not spam folders. Customize your analytics with pre-built dashboards, export API, and more. Read documentation guides, or contact our award-winning Support team for help. Use custom tagging, whitelabeling, conditional content, and more. Globally distributed infrastructure: Featuring automatic SPAM loop registration and pre-warmed dedicated IPs. Get analytics in multiple ways, plus custom tags, A/B test capabilities, and comparative reports. Utilize white-labelled click tracking, custom reverse DNS, rules engine, custom return path, and sub-accounts. That’s the average time to delivery for top 3 ISPs, sent from our MTAs to the recipient’s email server. -
25
Null Bounce
Null Bounce
Null Bounce is an email validation tool that helps companies decrease the bounce rate for email campaigns. Also, the service is available as an API, which can be used, for example, on sign-up forms to ensure that user submits a valid email address. To verify each email, Null Bounce uses several different methods, including SMPT-validation and some provider-specific methods. Role-base, disposable, and free emails are detected as well. All duplicated emails are free. Here are some features of Null Bounce: Free Trial; SMTP Verification; ESP-specific validation; Anti-greylisting method; API Access; Disposable emails cleaner; Catch-All Domain checker; Email duplicates checker; Role and free email; detection; Unknown results are free.Starting Price: $5.00/one-time -
26
Eudora Internet Mail Server
Eudora Internet Mail Server
Completely rewritten relay restrictions with an easier to use interface that gives finer control over relay security. New domain name resolver (DNR), EIMS now has it's own DNR, which works around bugs in the Open Transport DNR and performance problems with the OS X DNR. The new DNR does not currently support non-recursive DNSs. SMTP Submit port, this is a second SMTP port running on TCP port 587 by default. It currently works exactly the same as the standard SMTP port. This is handy for clients that are stuck behind an ISP that blocks port 25 access. Sending Setup option for maximum recipients per message. Expand SMTP Addresses option, you can now turn this off, with EIMS 3.1 and earlier it was always on. The SMTP server (both port 25 and 587) now reports Telnet connections and connections that look like port scans (connections where no data is sent and it doesn't time out).Starting Price: Free -
27
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 -
28
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 -
29
Pigeonmails
Insign Technology
SPF and DKIM are built into domain management of Pigeonmails. This gives control of your domain and reduces the risk of spoofing. We made our process and our software very simple. Sign-up for a free account. Just a few simple steps and start sending emails to your list. Address your customers by name, inserting any information you have about them into your emails. Personalization with flexible emails templates. Pigeonmails being most trusted Email Service Provider, we offer CREDITS BASED PLANS. We give upto 100% assured Delivery Rate with our Credit Based Package at unbeatable low plans. Our Promotional email service - Best fit for OPT-IN / Double OPT-IN / Verified Email Database send repeated newsletter or emails to same email list. Our transactional email service - Best fit for automatic messages sent in response to a subscriber’s actions. Subscription or booking confirmation, order updates, notifications — these are all examples of transactional emails.Starting Price: $85 per user per year -
30
Afterlogic Triton
AfterLogic
There are lots of SaaS email applications such as Mandrill or Brevo. They have different features and pricing. The main disadvantage is that you have to host your inventory at third-party service. With self-hosted solution you have full control over your email ecosystem. Your emails are hardcoded in monolith? Use Triton as your emailing microservice. Split the responsibility and focus on your app, Triton will take care of emails. Sometimes basic functionality is not enough so you can add some custom features. Powered by Laravel, Triton has well-organized and clean code. Extend it yourself or request custom development from us. Use self-hosted SMTP servers or cheap alternatives such as Amazon SES and it will still be cheaper compared to SaaS solutions.Starting Price: $99 one-time payment -
31
EmailShield
EmailShield
EmailShield is an email verification and deliverability platform that guarantees 99.8% verified accuracy through real SMTP handshakes — not DNS-only lookups used by legacy tools. Multi-step verification includes syntax checks, MX record validation, and real-time mailbox existence confirmation without sending actual emails. Bulk processing handles up to 100,000 emails per minute. The platform runs on self-hosted proxy infrastructure with zero third-party dependencies and rotating egress IPs. Features include 24/7 blacklist monitoring across 100+ global blacklists, DMARC/SPF/DKIM monitoring with AI-based insights, AI data enrichment, and free full scan diagnostics. Single API endpoint with SDKs for Python, Node.js, and PHP. Pricing starts at $19/mo for 10,000 credits with pay-as-you-go from $0.00018 per email — up to 75% cheaper than ZeroBounce, MillionVerifier, and Hunter. SOC 2 Type II, GDPR, and ISO 27001 certified with EU data residency options. 40,000 free credits on sign-up.Starting Price: $19/month/10k credits -
32
UniOne
ECOMZ Holding
Up to 5 million outgoing emails per hour. 99.8% of your emails will arrive at their destination. Feel like you might need a dedicated IP? Let us know and we’ll provide one, while also keeping an eye on the performance and stability of our shared IP pools. Get started with Web API or SMTP in minutes. GDPR compliant. No sensitive data to upload, just make a request to send an email and get the statistics back. UniOne has no personal information stored on our servers. Check your email statistics, keep an eye on delivery rates, openings, click-throughs, and unsubscriptions to manage your contacts more effectively. If you find your results are low, UniOne will make a few recommendations as to how to fix this. Running out? The system will let you know when your monthly plan is going to expire. You can also add multiple notification addresses so your IT team will be updated with recent reports or invite your teammates as shared access members to manage the account together.Starting Price: $4/month/6,000 emails -
33
SMTPeter
Copernica
European-based SMTP server. Reliable email delivery with dedicated IP addresses, excellent deliverability, and infrastructure hosted in the Netherlands. Easily integrate through SMTP and REST APIs, while SMTPeter takes care of authentication, and tracking with DKIM, SPF, and DMARC.Starting Price: €55 -
34
ZeptoMail
Zoho
Your transactional emails carry crucial information. ZeptoMail is a reliable and secure service that delivers these all-important emails instantly. With high-speed delivery and great inbox placement, ZeptoMail means you no longer keep your customers waiting. Transactional emails are unique emails that are usually triggered by some user action. More often than not, your customers are expecting these emails in their inbox within seconds of the trigger action. Pick the right delivery service and keep your customers happy. Your users will no longer be left refreshing their inbox for their email verification code or password reset emails. Email deliverability is a consequence of the reputation of the sender IP address. ZeptoMail is built exclusively to tackle the challenges of sending transactional emails. Delivery is good. Delivering to the right folder is crucial. ZeptoMail supports industry-standard authentication mechanisms such as SPF and DKIM.Starting Price: $2 per credit -
35
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 -
36
Mailingale
Mailingale
Mailingale is an email marketing platform that runs on sending infrastructure you own — your own SMTP relay or Amazon SES account, your own sender reputation.Starting Price: $19/month -
37
Ongage
Ongage
Ongage is an email marketing platform for advanced email marketers who send high-end campaigns and want to understand their audience better. Developers and non-developers can run high-volume campaigns, with advanced capabilities, on an intuitive dashboard that provides full control and get the job done! Gain actionable insights into customer behavior, send data-driven emails, segment according to intent, and more. Design personalized experiences based on your customers’ actions, with automated real-time emails that funnel your audience towards your goals. Ongage is a one-stop-deliverability-shop, with system capabilities, reports, and experts that can slice and dice deliverability from every angle. Sync your CRM, CDP, and data warehouse with Ongage and optimize campaigns to make an impact in real-time. Connect any SMTP relay, MTA, or use the built-in Ongage SMTP to send your emails. In Ongage, you can send from several SMTPs or just one. -
38
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 -
39
Instant Bulk SMTP
Instant Bulk SMTP
We understand how important role marketing plays in business and by looking that we have designed our Instant Bulk SMTP service which help to start sending your campaign in less than 30 minutes. Manage multiple contact lists, add, remove, delete, and import-export. Not only can you check bounces, opens, and click-throughs using our email analytics. You can set up or integrate with your applications. Easy to upgrade to a higher plan without any hassle. Instant Bulk SMTP is an outgoing email service that will allow you to send emails from your email address whether you have your own software or you don’t have your own software. We understand how important the role marketing plays in business and by looking at that we have designed our Instant Bulk SMTP service which helps to start sending your campaign instantly. Unlike typical email marketing services, our high-volume SMTP hosting service lets you send from your own application server, email client or a combination of different sources.Starting Price: $50 per month -
40
Listclean
Listclean
Listclean is an email validation and email verification platform. The service removes email typos, non-existent email, No-MX, abusive email accounts, spam traps, and other risky email addresses. Fully equipped email verification solutions: - SMTP Server Checks - Mail Server Validation - MX records checks - Remove Spam Traps - Remove Hard Bounces - Remove Catch-All Emails - Remove Disposable Emails - Remove Role-Based Emails - DNS check Use our Listclean service to detect and suppress invalid email addresses. By maintaining a clean list, you reduce bounce rates and improve your performance with mailbox providers.Starting Price: $5 - 10,000 Validation Credits -
41
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. -
42
InboxGreen
InboxGreen
InboxGreen is a free email deliverability checker that tests SPF, DKIM and DMARC records for any domain instantly, no account required. It shows exactly which DNS records pass, fail, or are missing, and explains what each result means for inbox placement. The platform includes 28 free DNS tools: DMARC analyzer, DMARC policy tester, SPF generator, SPF tester, DKIM generator, DKIM checker, DKIM selector finder, blacklist checker, email header analyzer, MX lookup, TXT lookup, WHOIS lookup, reverse DNS, DNS propagation checker, SMTP port checker, IP address info, and more. For teams that need to fix issues, the FixKit provides step-by-step DNS fix instructions for every problem found. The Monitoring plan watches up to 5 domains and sends alerts the moment SPF, DKIM or DMARC breaks. The Agency plan covers up to 30 domains with white-label PDF reports. Built for developers, marketers, and anyone who sends email and needs it to actually reach the inbox.Starting Price: $19 -
43
VeriMails
VeriMails
VeriMails is a real-time email verification platform built for cold outreach, list cleaning, and CRM hygiene. We check syntax, MX records, SMTP delivery, and run catch-all detection on every email. Cheapest verifier on the market - up to 30x cheaper than ZeroBounce at scale. REST API responds in under 2 seconds. Pricing starts at $12.50/mo on annual plans, or $19 one-time. 100 free credits on signup, no credit card.Starting Price: $0 (100 free credits) -
44
Daily Sender
Daily Sender
Send emails to unlimited email subscribers with just one click. With online email marketing software its easy to setup html/text campaigns, send and track. You can now track opened, unsubscribes and bounces. Software also have auto bounce processing and one click unsubscribe features. We also offer Dedicated Bulk Smtp Servers if you want to send emails with your own dedicated IPs then please click here to see our dedicated smtp server plans. Daily Sender provides a complete email marketing solution which gives our client a platform to enhance their product and grow their business. Our clients are located worldwide and use our services to send email marketing campaigns. We provide reliable delivery, scalability and real-time analytics. You are also provided with a platform where-in you can track your complete statistics. Our web-based tools help businesses grow by staying in touch with customers and prospects through email.Starting Price: $149.99 -
45
SMTP Debug Tool
SMTP Debug Tool
Ensure flawless email communication with the SMTP Debug Tool, a completely free and secure way to diagnose SMTP connection issues. This tool connects to your SMTP server, initiates a test session, and provides a detailed log of the interaction between servers. Whether you're using popular email services like SendGrid, Google SMTP, Elastic Email, UniOne or Mailgun, this tool simplifies troubleshooting and helps resolve sending errors. With end-to-end encryption, your information remains private and secure. The tool doesn’t store any session logs or credentials, and you can further enhance security by changing your password after testing or using the optional “SMTP Blackhole” feature.Starting Price: $0 -
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Email Inspector
Email Inspector
Get rid of spam traps, hard bounces, disposable or catch-all emails without breaking your budget. Based on billions of emails we checked, about 23% of emails in your list may be invalid. Don’t let them lower the deliverability of your emails and your reputation score. Get rid of them and boost the open rate and CTR of your cool email marketing campaigns. Verify emails before they get to your database. Implement EmailInspector’s real-time API into your website registration process, newsletter signup form, and everywhere else you ask for emails. Email Inpector comes with dozens of powerful integrations that fit into your existing workflow. Automagically import your lists with ease and consistently keep them clean. Remove invalid and hard bounce email addresses from your database using an SMTP check. Checks to see if an email address from a disposable email provider, such as Mailinator exists.Starting Price: $29 -
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Coresender
Coresender
We get your emails delivered in seconds. Your customers never have to wait for the emails they are expecting or need immediately, like password resets, order confirmations etc. We do all the hard work to place your emails straight in your recipient’s inbox, so you can focus on delighting even more customers and growing your business. Transactional emails, such as password resets, email confirmation links, order receipts must be delivered immediately. We ensure that they are always our top priority. That’s why we’ve separated our sending infrastructure, to ensure this priority. When you use a transactional sending account, you know your most important emails will never be affected even by the biggest of your email marketing campaigns. Your sender reputation is critical for email delivery and should always be your concern. We work with you every step of the way to improve your sender reputation score and keep it at a high level. -
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EmailDelivery.com
EmailDelivery.com
The easiest email marketing platform you've ever used. Clean intuitive user interface that doesn't make you "hunt" to figure out what you can do. Simple straightforward email automations. The next step is always right in front of you, no need to pore over documentation, video explainers, or train your team. Send a broadcast to multiple contact lists, dynamic segments, and groups of tagged contacts simultaneously. Personalize using any contact property in your database along side engagement, interests, behavior, and more. Trigger contacts who engage with your broadcasts into funnels of automated email sequences. Design gorgeous responsive emails with our intuitive drag & drop composer. Choose WYSIWYG for minimalism or raw HTML for pixel perfection. Realtime engagement Tagging for opens, clicks, and messages received. Suppress segments, Tags, and upload suppression lists to fine tune your audience.Starting Price: $35 per month -
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WillItInbox
WillItInbox
WillItInbox is an email deliverability and validation platform for SaaS teams, developers, agencies, marketers, and newsletter operators that depend on outbound email. Teams can generate a unique test inbox, send a real message from their app or ESP, and receive a practical deliverability report across SPF, DKIM, DMARC, BIMI, DNS, reverse DNS, blocklists, TLS, headers, content, links, reputation, and sender infrastructure. WillItInbox also validates individual emails and bulk CSV lists using syntax, DNS/MX, disposable, role, typo, provider, catch-all, SMTP, suppression, and confidence signals. It includes domain monitoring, DMARC report analysis, sending source visibility, provider reputation checks, API keys, webhooks, scheduled checks, incident diagnostics, inbox placement checks, team workspaces, and exportable reports. Paid plans start at $39/month. PAYG credits are available for extra email validation and deliverability testing usage.Starting Price: $39/month -
50
WP Mail SMTP
WP Mail SMTP
If you're having issues with WordPress not sending emails, you're not alone. With the rise of aggressive spam filtering, it's tough to reach the inbox unless your emails are configured correctly. Once you've switched from the default WordPress email settings over to WP Mail SMTP, your email deliverability issues will be solved for good. Are you missing out on leads and sales because emails sent from your WordPress site are ending up in the spam folder? Missing out on these opportunities can be a big hit to your bottom line. When your emails are properly authenticated using SMTP, they'll be recognized as legitimate and bypass those aggressive spam filters. WP Mail SMTP integrates with all of the best secure SMTP providers. No matter how many emails you need to send, you can connect with the right provider for your business needs and budget.Starting Price: $49 per year
