Receive and read emails
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Loading images in Proton Mail
Proton Mail doesn't load images in your emails by default to protect you from “spy pixels”. Learn how to enable automatic loading of images.
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Sieve filter (advanced custom filters)
Proton Mail offers the ability to automatically filter emails by assigning tags or sorting them into folders using the Sieve programming language. This article will introduce you to Sieve and explain how to write your own Sieve filters.
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How to check email headers in Proton Mail
Email headers contain information about your messages. Here’s a step-by-step guide to read and download your email headers in Proton Mail.
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How to enable or disable conversation view
Conversation view groups messages from the same conversation in your inbox so they're easy to follow. Learn how to enable or disable it.
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How to report phishing scams to Proton Mail’s security team
Phishing scams are one of the most common ways for hackers to gain access to your online accounts. Report phishing scams to Proton Mail.
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How to check encryption status using lock icons
All messages in Proton Mail show a lock icon that tells you their encryption status. In this article, we explain what these locks mean.
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How to block email stalkers
Learn how to completely block unwanted email from cyberstalkers on Proton Mail with block sender or advanced sieve filters.
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Link confirmation
Proton Mail offers a link confirmation feature on all devices. The feature is enabled by default, but you can turn it off and on in Settings.
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How to block unwanted emails in Proton Mail
If you’re receiving unwanted emails in your inbox, you can easily block the sender using the Proton Mail web or iOS app.
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Enhanced tracking protection
Proton Mail can block spy pixels and tracking links so you can view the full content of your emails without being tracked.
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What does Proton Mail’s warning about domain authentication failure mean?
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Homograph attacks
Homograph attacks are a kind of phishing attack in which trusted links are replaced with similar-looking malicious ones. Proton Mail helps users defend against homograph attacks via the link confirmation feature.
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Spam, block, and allow lists
Learn how Proton Mail spam filters work and how to add and remove senders from your spam, block, and allow lists.
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How to open Password-protected Emails in Proton Mail
Learn how to open and reply to a Proton Mail Password-protected Email — secure email you can send to non-Proton Mail addresses.
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Email bomb mitigation
A mail bomb is the sending of a massive amount of e-mail to a specific address or system. An increasingly common form of a mail bomb attack consists of bombarding the user mailbox with signup confirmation emails. Proton Mail offers an option to limit this with sieve filters.
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How to avoid receiving spam
Spam is one of the worst aspects of email. Learn tips and tricks on how to identify, avoid, and deal with incoming spam.
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Embedded Images
Proton Mail supports encrypted embedded images, allowing you to insert images directly into the body of a message alongside the text.
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How to unsubscribe from newsletters
Learn how to easily unsubscribe from mailing lists by using Proton Mail's unsubscribe button in the email header.