I have arch and ubuntu installed on the same laptop but different partitions. They share the same "home" on a separate partition but with the different user names:
/home /ubunut_user /arch_user
Now I'm installing thunderbird on Arch and want, of course, it to share the profile and emails that already exist at
/home/ubunut_user because I'd installed it before there and has used for a while already.
How can I do that? And should I necessarily first set up all my email accounts at Arch over again and only after that tell it to use the existing profile at /home/ubuntu_user? I want to avoid the necessasity to set them up, I just want to make it work easialy.