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1. S/MIME signature validation support for e-mail clients via Proton Bridge

   13 votes

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   1 comment  ·  Proton Mail & Calendar » New feature  ·  Delete…  ·  Admin →
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   Michael supported this idea  ·  Feb 4, 2026

2. S/Mime Support

   215 votes

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   55 comments  ·  Proton Mail & Calendar » New feature  ·  Delete…  ·  Admin →
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   Michael supported this idea  ·  Feb 4, 2026

3. Sync contacts with phone address book

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   Planned  ·  385 comments  ·  Proton Mail & Calendar » New feature  ·  Delete…  ·  Admin →
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   Michael supported this idea  ·  Feb 4, 2026

4. Move to option improvements

   2 votes

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   0 comments  ·  Proton Mail & Calendar » Changes to existing features  ·  Delete…  ·  Admin →
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   Michael shared this idea  ·  Feb 4, 2026

5. Conversation Grouping Improvements

   161 votes

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   51 comments  ·  Proton Mail & Calendar » New feature  ·  Delete…  ·  Admin →
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   Michael commented  ·  Feb 4, 2026  ·  Edit…  ·  Delete…

   Why is the “message-id” header not used, as is the case with Gmail and other mail clients?

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   Michael supported this idea  ·  Feb 4, 2026