PDF attachments arrive corrupted

  • Resolved Sylwester Ulatowski

    (@sylwester1213)


    9 months, 2 weeks ago

    When our site sends emails with PDF attachments through WP Mail SMTP Pro, the files arrive corrupted for recipients. Instead of actual PDF binaries, the plugin seems to attach the base64-encoded string (or a file containing base64 text). The result is that the attachment can’t be opened by normal PDF readers. We’ve confirmed the source PDF is valid, and the problem only appears once WP Mail SMTP Pro processes the email.

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