testmail.app Alternatives (September 2025)

Mailosaur removes the frustration of testing everything a user might do. 
Test password resets, replies, two-factor logins, and more.

Simple and powerful email verification JSON API using SMTP, typo checks, syntax validation, and free and disposable provider filtering. Free for personal use.

Mailinator provides Email and SMS Workflow Testing for Developers, Dev Teams, and QA Testing. Automate testing for 2FA and password resets.

Email Delivery Platform to test, send and control email infrastructure in one place. Great for dev teams. Start today - Sign Up free!

Send bulk, transactional, & marketing emails with our easy-to-use and reliable SMTP. Check the quality of email and improve delivery. Get started for free!

Random email address and phone number generators. Use SMS and email in otp tests, 2fa verification, and marketing.

Integrate in minutes and send transactional emails via our REST API or SMTP. Scale with our reliable global infrastructure and deliver emails to your customer's inbox instantly.

Incoming Email for your Web Application, send and receive email via HTTP Post in the Cloud

Start sending emails with our top-rated service. Sign up for free now to streamline your email sending process with API or SMTP.

This reliable and secure transactional email service by Zoho Mail ensures guaranteed and fast delivery of transactional emails, and comes with a pay-as-you-go pricing plan.

Powerful Transactional Email APIs that enable you to send, receive, and track emails, built with developers in mind. Learn more today!

Bulk email verifier. Get rid of spam traps, bounces,and disposable emails. Start with 100 FREE email validations! Secure & accurate bulk email validation

MailboxValidator email validation clean email lists and reduces bounce. It connects to the mail server and checks whether the mailbox exists or not.

JangoSMTP - Transactional Emails Made Easy. Highest Inbox Results. Live US-Based Support. API and SMTP Relay Sending.

Verify your email list in minutes, or integrate real-time email verification into your app with our API. Over 18 billion emails verified. Get started for free.

Powerful cloud-based test automation platform that lets you automate tests for web, mobile, desktop apps, and APIs in minutes. Sign up now!

Send your Transactional and marketing Emails safely, track your results and use powerful APIs designed for devolopers by developers. Try for free

Email API and SMTP relay to not just send and measure email sending, but also alert and optimise. We provide you with tools, expertise and support needed to reliably deliver emails to your customers inboxes on time, every time.

Explore AuthMailer transactional email service! Discover its features, pros, and cons to send transactional emails.

Take your email deliverability to the next level with AI-powered email warmup for unlimited mailboxes and comprehensive deliverability tests

Free real-time email verification service. Easy to use. Start using in 30 seconds

The most accurate email validator algorithm to identify and remove bad email addresses. Best sales starts with a better email deliverability. Enjoy a free trial.

SMTP2GO is the scalable, reliable email deliverability solution. Worldwide servers, a robust API, and powerful reporting set us apart. Try our free plan!

If you want excellent email deliverability, our services are highly dependable. Reach out to us for bounce checker and hunter email.

Improve domain reputation and increase the quality of your mailing list by validating emails before sending a campaign, or at the point of capture.

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The most accurate bulk email checker. Complete email address verification in seconds. Clear lists with online mail checker for free.

Set up email forwarding in seconds and start receiving and sending emails with your domain name. Absolutely free. No registration. 24/7 Support.

Improve domain reputation and increase the quality of your mailing list by validating emails before sending a campaign, or at the point of capture.

Automate transactions like real-time eligibility checks and claims processing with developer-friendly, JSON-based APIs that support thousands of payers.

Use our Mail Tester to test email. Get 3 Free Spam Tests to check your Email Deliverability and spam score with our free email spam checker.

Easily integrate electronic signatures into your apps and workflows with our secure, simple, and fast eSignature REST API. Create a free sandbox today.

Email delivery, perfected with Mailtinni! 💌 Your new SMTP service: fast, reliable, highly secure. 🚀

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Optimize your email strategy with ZeroBounce. We offer top-tier email validation, list cleaning, and address verification to reduce spam traps and enhance deliverability.

With the Gamalogic Email validation API tool, you can clean your email list and lower your bounce rate during email campaigns. Try it for free today!

The Most Comprehensive Email Verification Service from only $59: Email Checker, Email List Verify, Bulk Email Verifier, ESP Integrations, and Automatic Email Verification

Improve your email sender reputation and reduce bounce rates: real-time email validation API and bulk email list cleaning. Free trial & 100% accuracy.

Best at verifying emails that are catch-all or protected by SEGs (Secure Email Gateway). Single email verifications are free and unlimited.

Everything you need for more successful email delivery and performance management, from simple sending tools to deeply informative reporting.

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Reduce bounce rates, stop fake sign-ups and combat fraud with award-winning email verification solutions. Real-time API or batch file options available.

Easy to Install and manage, carrier class Mail Server Software with modern fast WebMail interface, spam protection and much more.

Email checker online tool. Ensure email accuracy with our efficient tool. Verify email addresses instantly and improve your communication reliability. Try for free!

Boost your email deliverability and engagement with Inboxroad. Our comprehensive solutions and expert guidance ensure your messages reach the inbox - Inboxroad

Discover AhaSend, the Email Service Provider dedicated to revolutionizing transactional emails. Enjoy hassle-free pricing at $0.50 per 1,000 emails and experience unmatched delivery times. No hidden fees, no brackets, just straightforward service designed for your peace of mind.

Improve your email deliverability with Bouncer's robust email verification and deliverability platform. 🌐

Email on Acid is the leading email pre-deployment checklist and a configurable part of your email marketing workflow, from accessibility checks to email previews.

Accurate real-time email validation service: upload and clean your list or integrate email verification into your app with our API. Get started for FREE!

Check the email newsletter spam score. Improve the deliverability of your emails with our free spam checker and tester tool.

Take back control of your email with this easy-to-deploy mail server in a box.

Streamline your emailing and boost your sales with Mailjet. We serve all your email and SMS needs with one simple and powerful service.

Elastic Email is a marketing platform, built on the most cost-effective delivery engine. Join tens of thousands of companies, which already send their emails!

Host your professional email on a secure, privacy-guaranteed, and ad-free email hosting service built-in with features like email marketing services can do.

Create your own marketing strategy Send in seconds Send & analyze email marketing campaigns. Start your free plan with unlimited credit. Free for a lifetime! Sign up for free See pricing INBOX is an email marketing tool with more powerful features and flexibility than any other Easy To Use Create a campaign in | Create email marketing your subscribers will admire INBOX

Niezawodne Email API i SMTP w chmurze. Najwyższa dostarczalność i szczegółowa analityka wiadomości email wysyłanych z Twojego systemu lub aplikacji.

Automate e2e tests without the time-consuming drudgery of test maintenance. Now with self-healing AI.

Elevate your marketing with Mailbox Power’s automated platform, designed to streamline direct mail and gift campaigns. Effortlessly schedule, send, and manage your direct mail pieces or personalized gifts over any timeframe. Our comprehensive service takes care of packaging, timing, and mailing, freeing you from the hassle of post office visits. Experience seamless direct mail and gifting solutions that save time and enhance your outreach. Say goodbye to manual processes and hello to efficiency with Mailbox Power.

Parcel streamlines your development workflow to help you rapidly code high-quality emails. Get started for free!

Automate access to your postal incoming mail and packages

#1 Email Preview Tool & Email Testing Software in 2022. Preview emails on different screen sizes, email clients, operating systems & devices.

Simple group email discussion lists for your club, association, office, society, family and more. Get started in minutes. 14-day free trial.

Litmus is the all-in-one email marketing platform that provides the tools and solutions your team needs to make every send count. Try for free today!

Deploy secure applications with StackHawk. Find and fix application security bugs in the build pipeline. Built for developers to own their AppSec

Email Validation and Verification, Email Checker and Bulk Verify Tool. Using DeBounce remove invalid, disposable, spam-trap, syntax and deactivated emails.

Loop Email unlocks teamwork right inside your email inbox. It's an all-in-one shared inbox that transforms email into your team’s superpower.

Use Mailmodo to create and send interactive emails your customers love. Drive conversions and get better email ROI. Sign up for a free trial now.

Providing up to the minute vulnerability coverage for your entire estate. Thoroughly scan and test your Web Apps, Infrastructure, Single Page Apps (SPAs) and APIs including Swagger (Open API), GraphQL and SOAP endpoints for security flaws, with our powerful browser based crawler.

The powerful email verification tool helps you validate and clean your email list seamlessly, ensuring verified email subscribers and high deliverability.

OX Cloud Email - Easy, Fast, Secure - Powerful email built for business

EmailConsul offers comprehensive email deliverability solutions, including DMARC monitoring, spam traps detection, seedlisting and inbox placement tests, Google Postmaster integration, SNDS integration, IP and domain blocklist monitoring, lookalike detection, and logs monitoring.

Ad-free Business Email Hosting with a clean, easy-to-use interface. Integrated Business Calendar, Contacts, Notes, Tasks. Free for up to 5 users.

Fast, secure, and sustainable email services provided by email professionals. Powerful Email and Domain Hosting for businesses and organizations.

Get the best email validation tool for busy businesses. Fully automated, completely hands-off, this email verification tool does it all for you.

Don't waste another minute. Automate ad screenshots, landing page QA, and other tasks that hold you back from doing your most impactful work and spending your time the way you want.

Abstract provides powerful APIs to help you enrich any user experience or automate any workflow. Used by 10,000+ developers worldwide.

SoapUI is the world's most widely-used automated testing tool for SOAP and REST APIs. Write, run, integrate, and automate advanced API Tests with ease. See why millions of users trust SoapUI for testing their APIs today!

Secure Blink ThreatSpy: AI-powered platform for web app & API security. Detect, prioritize, & remediate vulnerabilities with developer-first approach. Build secure applications with our developer-first approach.

Send cold emails to countless inboxes using multiple auto-rotating email accounts and advanced AI warm-ups to avoid spam. Start your 14-day free trial.

SMTP email relay service that is powerful, secured and reliable. Send better transactional emails and integrate easily with our email API.

Email Address Validation and Email List Cleaning Service reduces bounce rates. Quick Email Verification Service is the right platform to verify email list and improve deliverability.

It’s the classic high-touch sales conundrum: You need to talk with prospects individually in order to sell. But with multiple email conversations happening at

BoldSign: Fast, reliable eSignature APIs for seamless integration into your app. Easy to use with a free developer sandbox. Start capturing today!

Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.

Verify Email Addresses Effectively ✔️ Keep Your Mailing Lists Up-to-date With Email Validation Tool ➡️ Get A Free Trial for 7 days

Secure Mails, 500Mail by 500apps, get safe, encrypted, ad-free emails, and never worry about transmitting personal information again.

A suite of email marketing tools to monitor Inbox placement, Deliverability, IP health and Sender Reputation, compatible with all Email Service Providers.

Save on infrastructure and maintenance costs. Choose your data centre (US, EU, APAC). AWS native cloud email hosting.

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Cut your team's email management time in half & get started on the road to a cleaner inbox and more productive day with SaneBox. Start your free trial now!

QASource is a top software QA outsourcing company providing expertly engineered traditional and AI-augmented solutions for comprehensive software testing.

Generate reliable, personalized, live product demos and POCs in seconds. Focus on closing deals, not managing demo environments.

Experience the power of Listclean: the simple, AI-driven email verification service with unparalleled accuracy. 100 verifications free. Start trial today!

The best Open House Sign-in Sheet for real estate agents. Besides QR and Text visitor sign-in, connect to your favorite CRM and instantly enable email drip campaigns for lead conversion.

Shift left with functional testing. TestLeft helps developers conduct automated functional UI tests for web and desktop apps from any IDE. With support for BDD frameworks and CI/CD tools, you can test earlier and fix bugs quicker than ever before.

10K+ teams trust Hiver to streamline shared inbox management and run multi-channel help desks from their Inbox. Try Hiver free for 7 days.

Qodex.ai is an AI-powered QA automation tool for building, using, and testing web apps, mobile apps, and API testing.

UniOne is a transactional email service: you can send Transactional Emails simple and cheap with the help of platform API Email UniOne.