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position in Thunderbird

Works position works in Thunderbird.

Works in 2 of 21 · partial in 14 · not supported in 5

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

The fix for the clients that need it

Needed in 19 of 21: Gmail, Gmail Android, Gmail iOS and 16 more.

Use table-based positioning instead of CSS position

instead
<table role="presentation" width="100%" cellpadding="0"
  cellspacing="0" border="0">
  <tr>
    <td valign="top">Content</td>
    <td width="80" valign="top" align="right">Badge</td>
  </tr>
</table>
Show the original
before
<div style="position: relative;">
  <div style="position: absolute; top: 0; right: 0;">
    Badge
  </div>
  <p>Content</p>
</div>

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Your next question

Every feature in Thunderbird · position in every client

Questions

How many email clients support position?
It works in 2 of 21, partial in 14, not supported in 5.
Does position work in Apple Mail?
position is partly supported in Apple Mail. Closest to Thunderbird: Apple Mail, which agrees on 219 of the 261 features both are tested on.

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

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caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 16 May 2021 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping