allow change of default ImapMail folder location via GPO or Policies File

[ev75]

It would great if it would be possible to change the default location of the ImapMail folder via Group Policy or even the Policies.json file. The default location is in AppData\Roaming but since some companies are still using roaming profiles, this causes login times to be very long. Since it´s not possible to exclude this folder from the roaming profile - because the profile name is different for every user - you either have to exclude the whole Thunderbird folder (which defeats the purpose of having a roaming profile) or wait a long time during login.