border-spacing in Apple Mail iOS
Works border-spacing works in Apple Mail iOS.
Works in 17 of 21 · not supported in 2 · 2 untested
Which clients
- Works
- Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook (New), Outlook iOS, Outlook Android, Apple Mail, Apple Mail iOS, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, Samsung Mail, Thunderbird, Proton Mail, AOL Mail, Superhuman
- Not supported
- Outlook Classic, Outlook for Mac
- Untested
- HEY Mail, Fastmail
The fix for the clients that need it
Needed in 2 of 21: Outlook Classic and Outlook for Mac.
Use the cellspacing HTML attribute instead of border-spacing CSS
<table cellspacing="8" style="border-collapse: separate;">
<tr><td>Cell</td></tr>
</table>Show the original
<table style="border-spacing: 8px; border-collapse: separate;">
<tr><td>Cell</td></tr>
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What Apple Mail iOS does with border-spacing
The Emailens probe for border-spacing on a real install counted as Apple Mail iOS, captured 14 Oct 2026. It shows the probe, not the fix. Where border-spacing is supported it shows: 8px gaps between cells.
caniemail: border-spacing works in Apple Mail iOS.
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Your next question
- Does inline-size work in Apple Mail iOS?
Works in 4 of 21 · not supported in 16 · 1 untested
- Does cursor work in Apple Mail iOS?
Works in 2 of 21 · partial in 4 · not supported in 10 · 5 untested
- Does hyphenate-limit-chars work in Apple Mail iOS?
Works in 1 of 21 · not supported in 17 · 3 untested
- Does resize work in Apple Mail iOS?
Works in 1 of 21 · partial in 1 · not supported in 16 · 3 untested
- Does text-justify work in Apple Mail iOS?
Works in 0 of 21 · partial in 4 · not supported in 13 · 4 untested
- Does :focus work in Apple Mail iOS?
Works in 10 of 21 · partial in 3 · not supported in 7 · 1 untested
Every feature in Apple Mail iOS · border-spacing in every client
Questions
- How many email clients support border-spacing?
- It works in 17 of 21, not supported in Outlook Classic and Outlook for Mac, 2 untested.
- Does border-spacing work in Apple Mail?
- border-spacing works in Apple Mail. Closest to Apple Mail iOS: Apple Mail, which agrees on 284 of the 298 features both are tested on.
To see what in your email Apple Mail iOS does not support, paste the whole email.
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Real captures 14 Oct 2026 on 10 installs · caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 20 Dec 2023 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping