min-width

Client-by-client behaviour for min-width

Fully supports min-width (13): Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook iOS, Outlook Android, Apple Mail, Apple Mail iOS, Yahoo Mail, Samsung Mail, Thunderbird, HEY Mail, 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, 13 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.