# Switch to Protonmail Reason #31: Filter known spam and malware before it lands in your inbox

Malicious attachments and scam campaigns often arrive as ordinary-looking mail.

2026-09-09
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Switchboard Tech Services


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## Why this matters

Malicious attachments and scam campaigns often arrive as ordinary-looking mail. Privacy is easier to defend before this information is collected than after it has spread.

## The protection

Proton checks unencrypted incoming mail for spam, phishing, and malware before encrypting it in storage.

## Take action

Keep filtering enabled and verify unexpected attachments. Automated checks are fallible and do process unencrypted incoming mail. Email protection depends on the route and settings. Ordinary mail involving outside providers is not automatically end-to-end encrypted, and email metadata is not universally hidden.

## Sources

[Proton Mail security checklist](https://proton.me/support/new-account-owner-security-checklist), [Proton email tracker protection](https://proton.me/support/email-tracker-protection).

- Categories:
  [Proton Mail](https://switchboardtechservices.com/guides/categories/proton-mail/)
- Tags:
  [#malware](https://switchboardtechservices.com/guides/tags/malware/), [#Digital Self-Defense](https://switchboardtechservices.com/guides/tags/digital-self-defense/), [#Proton Mail](https://switchboardtechservices.com/guides/tags/proton-mail/), [#Email Privacy](https://switchboardtechservices.com/guides/tags/email-privacy/)

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Canonical URL: https://switchboardtechservices.com/guides/switch-to-protonmail-reason-31/

Language: en-us

Content type: guide

Author: Switchboard Tech Services

Published: 2026-09-09T11:48:38+00:00

Description: Why filter known spam and malware before it lands in your inbox matters for privacy and security.