Problem

Emails composed in Gmail might automatically revert to plain text, losing formatting like font size, color, weight, and other styling.

Solution

The configuration in Gmail client that could cause this issue is Composing messages in plain text mode.

When the plain text mode is enabled, all HTML is stripped, leaving only raw text. This can lead to emails being sent without any formatting.

To resolve the issue, ensure that the email composition mode is switched back to rich text mode:

  1. Open Gmail.
  2. Start composing a new email.
  3. Click on the three-dot menu in the email editor.
  4. Uncheck the “Plain text mode” option if it is enabled.

This will restore the default formatting options for newly composed emails.

Important notes:

  • Once the plain text mode is enabled, it persists as the default for all newly composed emails until changed manually.
  • Unfortunately, this setting cannot be changed remotely via API. The user needs to update the configuration manually.

Screenshots

  1. Composing in Rich Text Mode: When composing emails in rich text mode, the formatting options are available and applied to the message:

Rich Text Mode

  1. Composing in Plain Text Mode: In plain text mode, all formatting is disabled, and the email is composed in a basic text format:

Plain Text Mode