[DarronWyke]

This is because Mailgun is in the practice of spam. The number of spam campaigns I've seen with Mailgun as the conduit is high, second only to Mailchimp.

[bwag]

To be fair, Mailgun is in the practice of sending email. It just happens to be that email is one of the main conduits of spam.

[DarronWyke]

No, that's just correlation. Email can be spam, but not all email is spam.