Tag: Thunderbird

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Remove Thunderbird from default email client on Windows

Scenario

Even though Outlook is set as the default email client in Windows, when you use that program’s “Send as email” function it brings out a Thunderbird dialog box instead of Outlook.

Solution

Open regedit. (‘Start’ > Run > type regedit)

Check registry key: HKEY_CURRENT_USER\Software\Clients\Mail

right side double click on ‘Default’ Enter Microsoft Outlook in ‘Value Data’

Windows 10 may have some variants

  1. HKEY_CURRENT_USER\Software\Clients\Mailto
  2. HKEY_CLASSES_ROOT\mailto\shell\open\command
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Email – how to move your address book from Thunderbird to Outlook

  1. export the Thunderbird address book in .CSV format without special configurations
  2. while importing the .CSV file into Outlook, after choosing the “Contacts” folder in which to import the contacts, click on “Map Custom Fields“, select the fields of the .CSV file and associate them with the fields of the Outlook address book.