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Does CSS position Work in HTML Email?
Tests for CSS positioning include `relative`, `absolute`, `fixed` and `sticky`.
Quick Answer
Does position work in HTML email?
The CSS position property is supported in Outlook (Mac / Web), Thunderbird, ProtonMail. It is NOT supported in Gmail, Outlook (Windows). Always include a safe fallback for unsupported clients.
Which Email Clients Support CSS position?
CSS support for position across email clients
| Email Client | Desktop | Mobile / Web | Notes |
|---|---|---|---|
| Gmail | ✗ No | ✗ No | — |
| Outlook (Windows) | ✗ No | ? | — |
| Outlook (Mac / Web) | ✓ Yes | ~ Partial | — |
| Apple Mail | ~ Partial | ~ Partial | — |
| Yahoo! Mail | ~ Partial | ~ Partial | — |
| Samsung Email | ? | ~ Partial | — |
| Thunderbird | ✓ Yes | ? | — |
| ProtonMail | ✓ Yes | ✓ Yes | — |
| Fastmail | ~ Partial | ? | — |
Notes
- #1 Partial. Supports `relative`, `absolute` but not `sticky` and `fixed`.
- #2 Partial. Supports `sticky` but not `relative`, `absolute` and `fixed`.
- #3 Partial. Supports `relative` but not `absolute`, `sticky` and `fixed`.
- #4 Partial. Supports `relative` and `sticky` but not `absolute` and `fixed`.
- #5 Buggy. `fixed` elements scroll with page.
- #6 Buggy. `fixed` is replaced by `absolute`.
Frequently Asked Questions
Related CSS Properties
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