Describe the feature you'd like

either a configuration to change the used sendmail command or a selector to change the sendmail configuration.

e.g. for us we need something like /usr/sbin/sendmail -t -i instead of /usr/sbin/sendmail -bs

Describe the benefits this would bring to existing BookStack users

More flexibility to mail configuration.

In our case we would be able to use sendmail from bookstack without changing bookstack code or implementing a new selinux module.

Can the goal of this request already be achieved via other means?

Yes, you can change the contents of /app/Config/mail.php. But this needs to be change with every update of Bookstack and therefore not a good solution.

Have you searched for an existing open/closed issue?

• I have searched for existing issues and none cover my fundemental request

How long have you been using BookStack?

0 to 6 months

Additional context

No response