Hi everyone 👋

I’m configuring email on an Odoo 16 instance hosted on Odoo.sh, which has several companies in the same database.

Each company has its own domain and email, for example:

• company1.com → @company1mail.com

• company2.com → @company2mail.com

• company3.com → @company3mail.com

The issue is that the database name is company-1.odoo.com, so Odoo automatically uses that domain for all global aliases.

As a result, every internal alias looks like @company-1.odoo.com (for example, leads@company-1.odoo.com), which doesn’t look right for the other companies.

My idea is to use a neutral domain just for aliases, something like:

@mailflow.com

That way, the aliases would look cleaner, for example:

• company1mail@mailflow.com (outgoing)

• leads.company2mail@mailflow.com (incoming)

This would hide the internal Odoo.sh domain (@company-1.odoo.com), while each company would still use its own real mail server (SMTP/IMAP) for sending and receiving messages.

I have a few questions:

• Is there any official or recommended way in Odoo 16 / Odoo.sh to use a neutral global alias domain?

• What additional configurations are required to make it work properly?

• Is there a cleaner or more elegant way to handle this within Odoo.sh?

• Would this require some custom development, or is the OCA multi-company module enough?

Thanks in advance for any advice or experience you can share 🙏