Learn about end-to end-encryption when using Proton Mail SMTP vs. However, they’re still stored with zero-access encryption like any other emails in your Proton Mail inbox. Note that emails sent using SMTP are not end-to-end encrypted. You can see emails sent via SMTP in your regular Sent folder. SPF/DKIM/DMARC) you’ve set up for your custom domain.

the From: field), while respecting any anti-spoofing protections (e.g. Once our servers authenticate your email address and SMTP password, the application or device will be able to send emails with your email address as the sender (i.e. Then, you can use the email address and the newly-generated SMTP password to set up your device or business application. The first step is to generate a special SMTP token in your Proton Mail Settings for a custom domain email address. This feature allows apps or devices without mail servers to send emails from your Proton Mail address(es), using Proton Mail’s high reputation IP’s and anti-spam protections.Įxamples include allowing WordPress websites, customer relationship management (CRM) systems, enterprise resource planning (ERP) systems, or printers to send emails through Proton Mail. IMAP How to set up SMTP How to disable SMTP How does it work? This feature is currently only available for select Business or Enterprise users with custom domain addresses. These apps or devices will integrate with Proton Mail to send automated emails on your behalf, allowing you to benefit from added security and email delivery enhancements. printers) to send emails from your Proton Mail address(es). With Proton Mail’s SMTP, you can set up your business applications or devices (e.g.

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