If you own the server, it might be easier to set up a little smtp client. Or to be more security conscious, a incoming only smtp client like https://github.com/

If you own the server, it might be easier to set up a little smtp client. Or to be more security conscious, a incoming only smtp client like https://github.com/0xERR0R/mailcatcher/ https://github.com/0xERR0R/mailcatcher/ and collapse that dataflow. But pubsub has a monstrous free tier anyway and I also wanted to keep a copy of the emails on gmail which is easier to search