SO, I have a NAS (not open for external access - yet), PHP and WordPress installed on it, and plugins that want to send mail - but fail. Sendmail is just a busybox command, PHP mail() not configured, and I have no idea what wp_mail() wants to do, while many plugins use this - but email is HARD and all I know is that this doesn't work. So, I installed the 'Postman SMTP Mailer/Email Log', configured it via a flawless Wizard, sent a test mail that failed because (as expected) Google wants a application-specific password. Set one up, adapted Postman's configuration, and presto! Test mail arrives. Testmail from another plugin (previously headed for the bit bucket) now arrives, too. *Totally* painless. Postman even supports OAuth 2.0, too (I'll look at that later). #wordpress #mail #plugins