Select your version of Letter Opener.

Letter Opener for macOS
If you downloaded the Letter Opener app from the Mac App Store
Select
Letter Opener for macOS Mail
If you are using the Letter Opener plug-in for macOS Mail
Select
Letter Opener for iOS
If you are using Letter Opener on your iOS devices
Select

Contact support

Please note that we can only answer support requests in English language.
support@winmail.help
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