I remember using mailgun a decade ago or so. But every single site I check now requires me to enter a company name or work mail address (no Gmail etc). So where to go when I want to send some simple alert mails to myself when something in my scripts goes wrong?
Gmail SMTP for small personal use cases is very convenient for something like this. Matrix a nice option, too.
[1] - https://www.fastmail.com/for-developers/integrating-with-fas...
Edit: but not free, ugh. Understandable, but annoying to send a mail every couple of weeks
You will pay circa 10 cents per month if you use it once a month via pre paid
Which have you checked?