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Does CSS filter Work in HTML Email?
Tests with values `blur`, `brightness`, `grayscale`, `hue-rotate`, `invert`, `opacity`, `saturate`, `sepia` and `shadow`.
Quick Answer
Does filter work in HTML email?
The CSS filter property is supported in Outlook (Mac / Web), Apple Mail, Samsung Email, Thunderbird, and others. It is NOT supported in Gmail, Outlook (Windows), Yahoo! Mail, and others. Always include a safe fallback for unsupported clients.
Which Email Clients Support CSS filter?
CSS support for filter across email clients
| Email Client | Desktop | Mobile / Web | Notes |
|---|---|---|---|
| Gmail | ✗ No | ✗ No | — |
| Outlook (Windows) | ✗ No | ? | — |
| Outlook (Mac / Web) | ✓ Yes | ✗ No | — |
| Apple Mail | ✓ Yes | ✓ Yes | — |
| Yahoo! Mail | ✗ No | ✗ No | — |
| Samsung Email | ? | ✓ Yes | — |
| Thunderbird | ✓ Yes | ? | — |
| ProtonMail | ✓ Yes | ✓ Yes | — |
| Fastmail | ✗ No | ? | — |
Notes
- #1 Partial. Multiple values don't work.
Frequently Asked Questions
Test Your Email Now
Paste your HTML and see how it renders in clients that don't support filter.
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