Odoo v15 mail_multi_company & mail_template_multi_company

[hb-webdev]

It seems Odoo 15 migration has gone stale but our company would desperately appreciate if maintainers could implement and release mail_multi_company on the Odoo store for our Odoo.sh v15 instance. Another one we'd love to have is mail_template_multi_company (@Olivier-LAURENT) (though it seems it's ready to merge). Thank you!!

[pedrobaeza]

You can fund the authors/contributors to do such migration. Meanwhile, closing this issue, as the other issue is the one to coordinate the migration.

[ryanc-me]

FYI @hb-webdev, mail_multicompany is migrated at #403