MailPal, Email Sandbox
For Developers, QA, Marketing, etc...

Free Forever, Built by Developers for Developers

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Email Testing & Mailbox API

Mailpal captures SMTP traffic from staging and dev environments for monitoring and optimizing emails.

Our flexible API automates test flows and scenarios for streamlined email testing.

Analyze email content for spam score and validate HTML/CSS with Mailpal for optimal email deliverability and engagement.

With MailPal, create an email sandbox in minutes

Deliver your emails without worry

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Easy Integrations

Mailpal allows seamless integration with all programming languages and stacks, using SMTP and REST API. Regardless of your structure and mechanism our service can easily be integrated in just one minute, saving you time and effort. Try Mailpal today and start optimizing your email testing and delivery process.

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Project & Team Managment

With Mailpal, you can create multiple projects to set up different email inboxes as needed. Additionally, our service allows you to add teammates at various access levels, making it easy to manage different projects and inboxes. By granting different access levels, you can ensure that your team can effectively collaborate and manage their respective projects more conveniently.

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  • Email Testing

    Email Testing

    Automates email tests, like account verification and password resets.

  • SMTP Server

    SMTP Server

    Receives every email on your staging and dev environments.

  • Free Forever

    Free Forever

    Up to 50,000 test emails per month for every inbox.

  • HTML/CSS Check

    HTML/CSS Check

    Deep checks your emails before delivering them to your customers.

  • Spam Aalysis

    Spam Aalysis

    Improves email quality and deliverability by lowering your spam score.

  • Sandbox API

    Sandbox API

    Integrates sandbox API with your infrastructure, automates your flow.

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Frequently Asked Questions

If you have further questions, reach out to us.

  • What is Mailpal?

    Mailpal's SMTP server allows you to safely test and share emails from development and staging environments, without spamming customers or cluttering your inboxes. Optimize your email marketing performance and avoid costly mistakes with Mailpal.

  • Can emails received through Mailpal only be viewed on its interface?

    You do not necessarily need to stick to our web interface. Instead, you can automate and use API to send & view emails.

  • How does Mailpal render emails?

    Mailpal renders emails in the same way browsers do, which means no additional stylesheets or CSS presets are applied.

  • Which browsers does Mailpal support?

    Mailpal supports all versions of Chromium-based browsers, Firefox, and Safari in Desktop or Mobile versions.

  • Should I pay to use Mailpal?

    Mailpal is free. You can send 50,000 emails per inbox every month without any subscriptions.

  • I have a problem integrating Mailpal with my app, what should I do?

    Please send us an email at [email protected], describing the issue. You can also submit a ticket through Dashboard; we will try to reach out to you ASAP.

  • What is the SMTP rate limit for the inbox?

    You do not have any limits, enjoy Mailpal and help us provide a better service with your suggestions and criticism.

  • What is the email size limit?

    For now, the maximum size of an email including attachments is 3MB.

  • Can I use Mailpal as self-hosted?

    Unfortunately, not yet.