List-Unsubscribe header is “not valid” according to mail tester

  • Resolved game writer

    (@scrybbler)


    2 months, 1 week ago

    The mail tester at aboutmy.email says that the Newsletter list-unsubscribe header is outdated. “List-Unsubscribe header has been MIME encoded. This may work at some mailbox providers but is not valid.”

    This is the error message I’m getting from the aboutmy.email mail deliverability testing site. What do the devs think of this? Seems like not MIME-encoding a header would be pretty easy.

    The page I need help with: [log in to see the link]

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Support Michael Travan

    (@michael-travan)

    Hello,

    this is rather weird. May I ask which sending method are you currently using? Do you use an external service provider? Also, please add [email protected] as test subscriber to your website and send a test newsletter to that address, so we can take a closer look.

    Michael

    Thread Starter game writer

    (@scrybbler)

    Hi Michael!
    It’s going thru Amazon SES via the YaySMTP plugin.
    Sure, added and sent as of 330p CST aka queued and sending, with eta 10 mins from now.
    Thanks for investigating ??

    • This reply was modified 2 months, 1 week ago by game writer.
    • This reply was modified 2 months, 1 week ago by game writer.
    Plugin Support Michael Travan

    (@michael-travan)

    Hello,

    sorry, could you please tell me the subject of the test email you’ve sent?

    Michael

    Plugin Support Michael Travan

    (@michael-travan)

    Hello,

    we checked again that error and we have some doubts when it says that the header “is not valid”: our headers are rewritten by the sending provider. We also use Amazon SES to send our newsletters and the headers are rewritten by SES when they go through their servers. We have no control over this. Please try another test using mail-tester, which is an industry standard testing engine.

    Michael

Viewing 4 replies - 1 through 4 (of 4 total)
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