Thanks! 🤘 I'll check it

For transactional emails, I have used AWS SES, that has a 62k emails / month free tier if your server is on EC2, and the paid tier is always cheaper than other tools: 0,10 USD per 1000 emails ($1/10k). It's not more complex than Sendgrid or Postmark: you validate your domain, ask for approval, then you send your transactional emails through SMTP or API credentials, + free tier is always a good option 😬