[400]: Requested value ‘text/plain’ was not found.

  • Resolved Weiching

    (@weiching-lin)


    2 years, 6 months ago

    Hello,

    I am using the free version of Outlook, Send Test Email is successful, but the system fails to send emails.

    Mailer:Outlook Microsoft
    Status:Fail[400]: Requested value ‘text/plain’ was not found.

    YaySMTP Version:2.1.3
    WordPress:5.9.3
    PHP:7.2.34

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