How many email clients support ?

It works in 5 of 21, partial in 1, not supported in 15.

Does work in Apple Mail?

is partly supported in Apple Mail. Closest to Proton Mail: Apple Mail, which agrees on 203 of the 300 features both are tested on.

<svg> in Proton Mail

Works <svg> works in Proton Mail.

Works in 5 of 21 · partial in 1 · not supported in 15

Which clients

Works: Apple Mail iOS, Samsung Mail, Thunderbird, Proton Mail, Superhuman
Partial: Apple Mail
Not supported: Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook Classic, Outlook iOS, Outlook Android, Outlook for Mac, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, HEY Mail, AOL Mail, Fastmail

The fix for the clients that need it

Needed in 16 of 21: Gmail, Gmail Android, Gmail iOS and 13 more.

Convert inline SVG to an image for email compatibility

instead

3 lines

<img src="https://example.com/icon.png"
  width="24" height="24" alt="Icon"
  style="display: block; border: 0;" />

Show the original

before

3 lines

<svg width="24" height="24" viewBox="0 0 24 24">
  <path d="M12 2L2 7l10 5 10-5-10-5z" fill="#6d28d9"/>
</svg>

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Every feature in Proton Mail · <svg> in every client

Questions

How many email clients support <svg>?: It works in 5 of 21, partial in 1, not supported in 15.
Does <svg> work in Apple Mail?: <svg> is partly supported in Apple Mail. Closest to Proton Mail: Apple Mail, which agrees on 203 of the 300 features both are tested on.

To see what in your email Proton Mail does not support, paste the whole email.

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caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 6 Feb 2020 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping