Mailnest alternatives

Mailtrap is an Email Delivery Platform which covers all email-related needs in one place: testing, sending, and in-depth tracking to control how emails perform. Trusted by Atlassian, Calendly, PayPal, Atlassian, TopTal, Stack Overflow and others, Mailtrap provides customers with a reliable end-to-end sending solution so you can be sure that emails will land into your buyers' inboxes in time. Plus, users get a robust analytics toolset for complete control over their email deliverability. And there are Regular Weekly and Critical deliverability alerts to stay on top of all major email data.

DevMail is an email sandbox service for software developers. It allows developers to capture emails from various environments and inspect HTML, text, source code, raw headers, and attachments, and improve deliverability by analyzing email spam scores.

Create real, private email addresses on demand. Send and receive emails and attachments in application code and integration tests. Intuitive REST APIs and SDK Libraries. Free for personal use.

Litmus gives you the power to build, test, and analyze campaigns so your email marketing will drive the best possible results.

Mailsnag allows you to develop robust SMTP integrations while safeguarding against unintentional spamming of customers during testing on QA and Staging environments. Error and delay simulation helps you find unsafe code during testing.