Display Options

Enable highlighting of From header

Highlights and/or colors the From address depending on the DKIM result.

To choose a color enter the HTML color name or value. There exist two special color names: windowtext for the default text color, and transparent to disable the highlighting by making it transparent.

Show DKIM header

Chose when the DKIM header row should be shown.

If the DKIM signature is correct, but there exist some minor issues, a warning icon is shown in the DKIM header. This warning icon has a tooltip with additional information.

Show DKIM tooltip for From header

Chose when the From header should have a tooltip with the detailed DKIM result.

Show the favicon of known signing domains before the From address

Shows the favicon of the signing domain before the From address. This makes it easy to recognize that an e-mail is signed by the correct domain. The favicon has a tooltip with the detailed DKIM result.

Note that a favicon is only shown if it is available via one of the following ways:

• The domain is together with the favicon in an internal list of the add-on. The process and requirements for adding new domains can be found at https://github.com/lieser/dkim_verifier/wiki/Contribute#sign-rules-and-favicons.
• Brand Indicators for Message Identification (BIMI) (since version 5.4.0). This requires the following:
  • Reading of the Authentication-Results header is enabled.
  • The used mail server supports BIMI.
  • The signing domain supports BIMI.

This is to ensure there is a trust relation between the signing domain and the favicon, so malicious domains can not show the favicon of another domain.

Option available since version 1.6.0.