You are 100% right. It started the same with our service; we bought back ImprovMX (I don't put the link as I'm not looking for publicity - just for reference) w

You are 100% right. It started the same with our service; we bought back ImprovMX (I don't put the link as I'm not looking for publicity - just for reference) when it was just a 5$ droplet at Digital Ocean, and now we have 10 big servers, more than 700$ monthly cost (and I honestly think it's not that much) and have to handle all the messy parts of delivering an email. It's easy to send an email, but it's way harder to ensure that the emails you send are delivered properly.