Best Hook point for registration

[StarShaper]

Hi,

I'm searching for the best hook point in register.php to do a cross registration with another script.

I want to fetch the data only then, when the user has been fully activated (email).

What is the best hook point?

register_activate_process ? :)

[Opserty]

register_activate_process (or register_addmember_complete possibly - haven't checked the files)

[Lynne]

register_activate_process (or register_addmember_complete possibly - haven't checked the files)
I used the register_addmember_complete when I needed to register my users to the tracker at the same time they register for the forum.