This advice is some years old and refers to a different target, but switching from service A to B seems to be rather straightforward:
There seems to be a limitation concerning E2EE, however (in case you've already turned it on):
This advice is some years old and refers to a different target, but switching from service A to B seems to be rather straightforward:
There seems to be a limitation concerning E2EE, however (in case you've already turned it on):