@media in Fastmail
Works @media works in Fastmail.
Works in 5 of 21 · partial in 14 · not supported in 2
Which clients
- Works
- Apple Mail, Apple Mail iOS, HEY Mail, Fastmail, Superhuman
- Partial
- Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook iOS, Outlook Android, Outlook for Mac, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, Samsung Mail, Proton Mail, AOL Mail
- Not supported
- Outlook Classic, Thunderbird
The fix for the clients that need it
Needed in 16 of 21: Outlook Classic, Thunderbird, Gmail and 13 more.
Design mobile-first for clients without media query support
<!-- Single-column layout that works without @media -->
<table role="presentation" width="100%"
style="max-width: 600px;" cellpadding="0"
cellspacing="0" border="0">
<tr>
<td style="padding: 16px;">Left Column</td>
</tr>
<tr>
<td style="padding: 16px;">Right Column</td>
</tr>
</table>Show the original
<table width="800">
<tr>
<td width="400">Left Column</td>
<td width="400">Right Column</td>
</tr>
</table>
<style>
@media (max-width: 600px) {
table { width: 100% !important; }
td { display: block !important; width: 100% !important; }
}
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Your next question
- Does @media prefers-reduced-motion work in Fastmail?
Works in 9 of 21 · partial in 1 · not supported in 10 · 1 untested
- Does @supports work in Fastmail?
Works in 9 of 21 · not supported in 12
- Does @font-face work in Fastmail?
Works in 6 of 21 · not supported in 15
advice - Does @import work in Fastmail?
Works in 4 of 21 · not supported in 17
- Does <form> work in Fastmail?
Works in 10 of 21 · partial in 4 · not supported in 7
fix - Does <svg> work in Fastmail?
Works in 5 of 21 · partial in 1 · not supported in 15
fix
Questions
- How many email clients support @media?
- It works in 5 of 21, partial in 14, not supported in Outlook Classic and Thunderbird.
- Does @media work in Apple Mail?
- @media works in Apple Mail. Closest to Fastmail: Apple Mail, which agrees on 192 of the 235 features both are tested on.
To see what in your email Fastmail does not support, paste the whole email.
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caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 13 Dec 2023 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping