Skip to main content

Our email CSS engine is open source. Give it a star on GitHub 

Emailens

gap in Outlook iOS

Partial gap is partly supported in Outlook iOS.

Supports column-gap for flexbox.

Works in 7 of 21 · partial in 9 · not supported in 5

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

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

What to do instead in Outlook iOS

Use padding or margin on child elements instead of gap

instead
<table role="presentation" cellpadding="0"
  cellspacing="0" border="0">
  <tr>
    <td style="padding-right: 16px;">Item 1</td>
    <td style="padding-right: 16px;">Item 2</td>
    <td>Item 3</td>
  </tr>
</table>
Show the original
before
<div style="display: flex; gap: 16px;">
  <div>Item 1</div>
  <div>Item 2</div>
  <div>Item 3</div>
</div>

A free account opens all 21 clients and keeps your checks for 7 days. Create a free account →

What Outlook iOS does with gap

caniemail record, tested upstream 28 Dec 2022

  • Partial. Supports column-gap for flexbox.

Your next question

Every feature in Outlook iOS · gap in every client

Questions

How many email clients support gap?
It works in 7 of 21, partial in 9, not supported in 5.
What do I use instead of gap in Outlook iOS?
Use padding or margin on child elements instead of gap.
Does gap work in Outlook Android?
gap is partly supported in Outlook Android. Closest to Outlook iOS: Outlook Android, which agrees on 270 of the 296 features both are tested on.

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

The checker needs a computer screen.

caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 28 Dec 2022 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping