Amazon SES is very simple, you don't have to set up any infra on AWS, just call the API from wherever. For 3000 mails a month, you'll spend $ 0.30. Disclaimer

Amazon SES is very simple, you don't have to set up any infra on AWS, just call the API from wherever. For 3000 mails a month, you'll spend $ 0.30. Disclaimer: I work at AWS.