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visibility in Yahoo Mail iOS

Works visibility works in Yahoo Mail iOS.

Works in 13 of 21 · not supported in 8

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

The fix for the clients that need it

Needed in 8 of 21: Gmail, Gmail Android, Gmail iOS and 5 more.

Use conditional comments or remove hidden content

instead 
<!-- For screen readers, use font-size: 0 trick -->
<div style="font-size: 0; max-height: 0; overflow: hidden;
            mso-hide: all;" aria-hidden="true">
  Preheader text
</div>
Show the original
before 
<div style="visibility: hidden;">
  Hidden content for screen readers
</div>

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What Yahoo Mail iOS does with visibility

caniemail record, tested upstream 28 Feb 2019

  • Buggy. visibility:collapse applied to a <tr> only hides content and does not "remove" it from layout.

Your next question

Every feature in Yahoo Mail iOS · visibility in every client

Questions

How many email clients support visibility?
It works in 13 of 21, not supported in 8.
Does visibility work in Yahoo Mail Android?
visibility is not supported in Yahoo Mail Android. Closest to Yahoo Mail iOS: Yahoo Mail Android, which agrees on 284 of the 297 features both are tested on.

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

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Real captures 14 Oct 2026 on 11 installs · caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 28 Feb 2019 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping