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Does CSS font-size Work in HTML Email?
Sets the size of the font.
Quick Answer
Does font-size work in HTML email?
The CSS font-size property is supported in all major email clients tested. You can use it with confidence in your HTML emails.
Which Email Clients Support CSS font-size?
CSS support for font-size across email clients
| Email Client | Desktop | Mobile / Web | Notes |
|---|---|---|---|
| Gmail | ✓ Yes | ✓ Yes | — |
| Outlook (Windows) | ~ Partial | ? | — |
| Outlook (Mac / Web) | ✓ Yes | ✓ Yes | — |
| Apple Mail | ✓ Yes | ✓ Yes | — |
| Yahoo! Mail | ~ Partial | ~ Partial | — |
| Samsung Email | ? | ~ Partial | — |
| Thunderbird | ✓ Yes | ? | — |
| ProtonMail | ? | ? | — |
| Fastmail | ? | ? | — |
Notes
- #1 Partial support. `rem` values are not supported.
- #2 Partial support. `relative` and `percentage` size values not supported.
Frequently Asked Questions
Related CSS Properties
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