GMail Label Styler

Set GMail message viewer and editor styles by label. e.g. mailing list messages that are best viewed with a monospace font.

GMail Label Styler - Customize GMail Styles by Label

GMail Label Styler is a Chrome extension that enables users to apply CSS styles to GMail message viewer and editor based on label. It allows customization of styles for mailing list messages or other situations that require specific fonts. The extension also enables increasing font size in the editor without affecting the email format.
Install from Chrome Web Store

Extension stats

Users: 87
4
Rating: 4.50
(4)
Version: 0.8 (Last updated: 2020-05-11)
Creation date: 2020-05-11
Risk impact: Moderate risk impact
Risk likelihood:
Manifest version: 2
Permissions:
  • https://mail.google.com/
  • storage
Size: 31.53K

Other platforms

Not available on Android
Not available on Firefox
Not available on Edge
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Extension summary

Note: updated for the latest GMail as of 2020-05-11

Enables user to apply CSS to GMail message viewer and editor for selected labels only. Created for mailing list message viewing and editing that works best with monospace fonts but useful in many situations. Configuring CSS properties and one or more label names.

Can be used to increase font size in GMail editor without causing the email to be sent in the larger font or even rich text (HTML) format. Only affects your view of the message in the editor, not the recipient.

User reviews

The idea is great, but unfortunately not working on new Gmail interface. I make extensive use of labels to track 100s of mails from system health checks. Hopefully someone finds a work around. Paul
by Paul White, 2020-03-11

Really basic, but also really handy. I'm a system administrator and get a lot of reports with formatted ASCII tables, etc. in my email. This lets me make them properly readable again.
by David Brodbeck, 2018-01-18
View all user reviews

Extension safety

Risk impact

GMail Label Styler requires a few sensitive permissions. Exercise caution before installing.

Risk likelihood

GMail Label Styler has earned a fairly good reputation and likely can be trusted.

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