overflow in Outlook (New)
Partial overflow is partly supported in Outlook (New).
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 Outlook (New) may not see overflow the way you wrote it, even if it looks right where you tested it.
What to do instead in Outlook (New)
Content will always be visible; design for full content display
<!-- 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
<div style="max-height: 200px; overflow: hidden;">
Long content that gets clipped...
</div>A free account opens all 21 clients and keeps your checks for 7 days. Create a free account →
What Outlook (New) does with overflow
caniemail record, tested upstream 27 May 2025
- Partial.
overflow-block&overflow-inlinenot supported.
Your next question
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Works in 2 of 21 · partial in 3 · not supported in 13 · 3 untested
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Works in 8 of 21 · not supported in 13
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 Outlook (New)?
- Content will always be visible; design for full content display.
- Does overflow work in Outlook 365?
- overflow is partly supported in Outlook 365. Outlook (New) and Outlook 365 differ on 1 feature: text-shadow.
To see what else in your email Outlook (New) does not support, paste the whole email.
No signup · Five clients free, Outlook Classic included · All 21 with an account
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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