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overflow in Gmail iOS

Partial overflow is partly supported in Gmail iOS.

overflow-block & overflow-inline not supported.

Works in 4 of 21 · partial in 16 · not supported in 1

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

Your reader in Gmail iOS may not see overflow the way you wrote it, even if it looks right where you tested it.

What to do instead in Gmail iOS

Content will always be visible; design for full content display

instead 
<!-- Show full content, or truncate server-side -->
<div style="max-height: 200px;">
  Shortened content that fits...
  <a href="https://example.com/full">Read more</a>
</div>
Show the original
before 
<div style="max-height: 200px; overflow: hidden;">
  Long content that gets clipped...
</div>

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What Gmail iOS does with overflow

caniemail record, tested upstream 27 May 2025

  • Partial. overflow-block & overflow-inline not supported.

Your next question

Every feature in Gmail iOS · overflow in every client

Questions

How many email clients support overflow?
It works in 4 of 21, partial in 16, not supported in Outlook Classic.
What do I use instead of overflow in Gmail iOS?
Content will always be visible; design for full content display.
Does overflow work in Gmail Android?
overflow is partly supported in Gmail Android. Closest to Gmail iOS: Gmail Android, which agrees on 273 of the 300 features both are tested on.

To see what else in your email Gmail iOS does not support, paste the whole email.

The checker needs a computer screen.

Real captures 14 Oct 2026 on 10 installs · caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 27 May 2025 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping · the Gmail capture is not counted (it skips Gmail's sanitiser)