Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

The mailto application is missing from the list in Tools>Options>Applications

  • 1 (رد واحد)
  • 1 has this problem
  • 1 view
  • آخر ردّ كتبه cor-el

more options

I just installed Firefox on a new PC. I used Firefox Sync which worked great. However, there is no "mailto" application showing in my list of Applications so that I can set my email link to Gmail.

There is a previous thread on this but it did not solve my problem. I tried, as suggested, changing mimeTypes.rdf to mimeTypes.old and restarting but that did NOT work. Still not showing a mailto.

I am running Firefox 38.4 ESR on Windows 7. (I need to use the ESR version due to some add-ons I need that won't run under FF 41.) I am wondering if this missing "mailto" is related to using the ESR version?

Thanks for any suggestions.

I just installed Firefox on a new PC. I used Firefox Sync which worked great. However, there is no "mailto" application showing in my list of Applications so that I can set my email link to Gmail. There is a previous thread on this but it did not solve my problem. I tried, as suggested, changing mimeTypes.rdf to mimeTypes.old and restarting but that did NOT work. Still not showing a mailto. I am running Firefox 38.4 ESR on Windows 7. (I need to use the ESR version due to some add-ons I need that won't run under FF 41.) I am wondering if this missing "mailto" is related to using the ESR version? Thanks for any suggestions.

All Replies (1)

more options

You can check the mailto prefs on the about:config page and reset user set (bold) prefs via the right-click context menu to the default value.

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

(you already tried this:) Rename (or delete) the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can use this button to go to the current Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)