Hello everyone,<p>I’m embarking on a journey to create my own email service as a solo developer and would love to hear from those who have already ventured down this path. How has your experience been?<p>My aim is to offer a comprehensive solution that includes email, calendar, and contacts. I know there are numerous open-source projects available, and I’m looking for your recommendations on which ones are the most reliable and effective.<p>Additionally, if you know of any resources similar to https://explained-from-first-principles.com/email that could guide me through the technical aspects, I would greatly appreciate it.<p>Thank you!