Is there a service where you can send email via a GET request?

Question

Computer networks

Hello!
It is required to send email from one cunning piece of iron, but the piece of iron itself does not support smtp, however, you can dodge and request an arbitrary URL with parameters.
I would like to ask if there are any ready-made services that can send email via http-get?
Yes, I know that you can write your own php script that will send everything you need via sendmail, but you will need hosting, which at the right time may turn out to be unpaid / disabled for maintenance, etc. Therefore, they are looking for a service that works 24/7 and can send email, even if for a fee.
Thank you!

Answer 1

unisender.com
API has sendEmail method method - simplified sending of individual email messages

Answer 2

Google: "email http API"