Support » Plugin: Mailster Mailgun Integration » Use WP SMTP

  • I have tried this plugin, and set everything right in Mailgun itself.
    I was keep getting the following error:

    ‘to’ parameter is not a valid address. please check documentation.

    While searching long for as solution, I tried WP SMTP, and the error was gone and my campaign was sending again.

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  • I happen to also use Mailster with Mailgun. Works absolutely fine for me 🙂
    I’d recommend deactivating other plugins to check for conflicts.
    Also, I initially thought I needed both this and the standard Mailgun plugin. Apparently this one is enough, the standard one actually causes conflicts.

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