Apps similar to MailGrab include Mailpit, which is free and open source. Other options are Mailtrap, Mailnest, Mailosaur and testmail.app. You can choose from more than 10 Mail Servers like MailGrab for the web, Windows, Linux, Mac and self-hosting.
Capture SMTP traffic from staging and dev environments. Easily validate email content text or HTML/CSS. Utilize an Email Sandbox to thoroughly examine and troubleshoot emails within staging, development, and quality assurance (QA) environments prior to sending them to recipients...
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.
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