Thunderbird logo


If you’re looking for information related to the branding of our email client, you’ve just found the promised land — or, at the very least, the right page.


For all permitted uses of our trademarks, you may not:

  • alter our logos in any way
  • place a logo in such close proximity to other content that it is indistinguishable
  • make our logo the most distinctive or prominent feature on your website, printed material or other content
  • use our logos in a way that suggests any type of association or partnership with Mozilla or approval, sponsorship or endorsement by Mozilla (unless allowed via a license from us)
  • use our logos in a way that is harmful, deceptive, obscene or otherwise objectionable to the average person
  • use our logos on websites or other places containing content associated with hate speech, pornography, gambling or illegal activities
  • use our logos to, or in connection with, content that disparages us or sullies our reputation


Usage Logo

Our standard lockup for representing Thunderbird. In most cases, use this.

The logo on its own. You can safely use this if Mozilla and the Thunderbird brand are clearly visible or well established elsewhere on the page or in the design.