border-spacing in Proton Mail
SupportedProton · webmail
Support Details
Use the cellspacing HTML attribute instead (e.g., <table cellspacing="8">).
Before
<table style="border-spacing: 8px; border-collapse: separate;">
<tr><td>Cell</td></tr>
</table>After
<table cellspacing="8" style="border-collapse: separate;">
<tr><td>Cell</td></tr>
</table>Use the cellspacing HTML attribute instead of border-spacing CSS
border-spacing is fully supported in Proton Mail. No workarounds needed.
Other Clients
| Client | Support |
|---|---|
| Gmail | Supported |
| Gmail Android | Supported |
| Gmail iOS | Supported |
| Outlook 365 | Supported |
| Outlook (New) | Unsupported |
| Outlook Classic | Unsupported |
| Outlook iOS | Supported |
| Outlook Android | Supported |
| Outlook for Mac | Unsupported |
| Apple Mail | Supported |
| Apple Mail iOS | Supported |
| Yahoo Mail | Supported |
| Yahoo Mail Android | Supported |
| Yahoo Mail iOS | Supported |
| Samsung Mail | Supported |
| Thunderbird | Supported |
| HEY Mail | Unknown |
| AOL Mail | Supported |
| Fastmail | Unknown |
| Superhuman | Supported |
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