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Thank you for your patience, Christopher

Letter Opener in macOS Mail

Go back

Go back

Link: https://winmail.help/t/manage-plugins

1. In Mail go to Mail > Preferences …

2. In the following window click "Manage Plug-ins …"

3. Enable the checkbox by Letter Opener and click "Apply and Restart Mail"

Troubleshoot

Installer can’t be opened because it was not downloaded from the App Store.
Winmail.dat file is not converted.

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