Skip to main content

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

1
  • Confusingly, Outlook does not seem to change these, and mailto: still opens Thunderbird. I'm afraid I have to change my question into "What does Thunderbird consider modified by Outlook and how to stop this?" Commented Nov 29, 2012 at 8:59