Lost / forgotten license key
Installation and Licensing Issues
Adding or Importing Account
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Unable to sign in to Google app in Mailbird
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Authentication Failed - Unable to add email account
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AOL / Yahoo possible authentication issue
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Gmail authorizing issue when adding the account to Mailbird
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AOL authentication problems
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Yahoo - Incorrect username or password
Issues Sending or Receiving Emails
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How to prevent Windows 10 Defender from blocking Mailbird
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Emails fail to send / Sending error/ Emails stay in drafts
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I can't receive or send emails anymore
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How to prevent Windows 11 Defender from blocking Mailbird
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Request is throttled. Suggested backoff time ... issue
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Microsoft 365 - SMTP authentication unsuccessful error when sending emails
Display Issues
General and Misc
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How to check whether you have an IMAP or POP3 email account
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Mailbird freezes or hangs
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My deleted email suddenly reappear in my inbox
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Mailbird won't start after a recent update
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Database version mismatch error
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My emails get deleted or marked as read automatically in Mailbird