How to connect database to stalwart server

[Narsing01]

I’m currently setting up my own mail server and client for development purposes. I’ve configured Stalwart as the server and set up one client. Now, I want to connect my PostgreSQL virtual machine as the database. I’ve reviewed all the available official documentation and have a good understanding of the process, but I have a few questions:

Do I need to make any changes to the backend development code to integrate the PostgreSQL database?
If not, I’ve attempted to add the database as storage via the GUI, and I can see the newly added database in the /data folder and configuration file.
After adding a domain and creating users, is there a way to determine where these users are stored (e.g., Stalwart’s own server, temporary storage, etc.)?
Alternatively, can we use a filesystem as blob storage?

Your assistance with these questions would be greatly appreciated.

Thank you!

[mdecimus]

Do I need to make any changes to the backend development code to integrate the PostgreSQL database?

No, PosgreSQL is already supported. Here is a link to the documentation.