SquirrelMail Modification Install

Has anyone got SquirrelMail to work using NGINX and mailinabox?
I don’t want to break the system and I’ve asked in the past for an official additional build but it seems this wont ever happen.
Anyone complete this modification?

Just curious, why do you want SquirrelMail? I used it a decade ago, don’t really miss it…

It seems like you’d just need to enable PHP (not fun), and then install & configure Squirrel?

And, of course it must be said: the best way to not break the box is to run Squirrel on a different box.