Seconding everyone suggesting to just use a Gmail account.
But to add to that, I created a small VM running Postfix that is an open relay that sends mail via that Gmail account. This way, I can use the Postfix VM as the SMTP server for all the other services and I don't have to remember and sprinkle that Gmail password all over the place.
Postfix's main.cf can be secured by configuring it to route all mail through that Gmail account, overwrite the 'from' address, and restrict the 'to' field to send only to myself and no other recipients. Then it doesn't matter what the 'from' of the various self-hosted services are, Postfix transforms the headers into something appropriate and sends it to Gmail to be delivered.
Seconding everyone suggesting to just use a Gmail account.
But to add to that, I created a small VM running Postfix that is an open relay that sends mail via that Gmail account. This way, I can use the Postfix VM as the SMTP server for all the other services and I don't have to remember and sprinkle that Gmail password all over the place.
Postfix's main.cf can be secured by configuring it to route all mail through that Gmail account, overwrite the 'from' address, and restrict the 'to' field to send only to myself and no other recipients. Then it doesn't matter what the 'from' of the various self-hosted services are, Postfix transforms the headers into something appropriate and sends it to Gmail to be delivered.