mailgun

[Solved] Send email using PHPMailer, Mailgun and HTTP api

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You should search before posting. GoDaddy blocks outbound SMTP, but they provide a gateway that you can use instead. This blocks many sending scenarios (such as GoDaddy failing SPF checks). MX records have absolutely nothing to do with outbound mail. You can use PHPMailer with HTTP services like MailGun by using it to construct messages … Read more

[Solved] Java Google App Engine won’t send email via Mailgun SMTP

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I’m guessing you are talking about this tutorial to configure the sending of mails through Compute Engine (which explains why it works well on your VM instance). That tutorial is for Compute Engine, in the case of App Engine Standard applications, you have the option of using Mail API, however, since Google is no longer … Read more