Receive and read emails

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    How to open Password-protected Emails from Proton Mail

    Learn how to open and reply to a Proton Mail Password-protected Email — secure email you can send to non-Proton Mail email addresses.

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    Enhanced tracking protection

    Proton Mail can block email trackers so you can view the full content of your emails without being tracked for targeted advertising.

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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 using Proton Mail’s advanced sieve filters.

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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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    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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    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 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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    What does Proton Mail’s warning about domain authentication failure mean?

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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 unsubscribe from newsletters

    Learn how to easily unsubscribe from mailing lists by using Proton Mail's unsubscribe button in the email header.

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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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    Spam filtering, Allow List, and Block List

    Learn how Proton Mail spam filters work, including how to add and remove email addresses and domains from your Allow List and Block List.

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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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    How to load images by default

    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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    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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