min-width

Client-by-client behaviour for min-width

Fully supports min-width (19): Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook iOS, Outlook Android, Outlook for Mac, Apple Mail, Apple Mail iOS, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, Samsung Mail, Thunderbird, HEY Mail, Proton Mail, AOL Mail, Fastmail, Superhuman.

No support (2): Outlook (New), Outlook Classic. Plan fallbacks for these clients before relying on min-width in production sends.

Fixes & Workarounds

<td style="min-width: 200px;">Content</td>

<!-- Outlook ignores min-width. Use a fixed width or a spacer. -->
<td width="200" style="width: 200px;">Content</td>

<td style="min-width: 200px;">Content</td>

<!-- Outlook ignores min-width. Use a fixed width or a spacer. -->
<td width="200" style="width: 200px;">Content</td>

Production guidance for min-width

min-width is a CSS property. Across the email client matrix, 19 of 15 tracked clients support it fully, 0 only partially, and 2 not at all. The clients most likely to require a workaround for this feature are Outlook (New), Outlook Classic. Each of them needs a tailored fallback. See the per-client examples above for the specific code fix Emailens recommends.

When in doubt, ship a baseline that renders without min-width and treat it as progressive enhancement on clients where support is verified. Emailens automatically detects cross-client divergence on this feature when you preview an email, so you can see exactly which template paths break before a campaign goes out.