Where can I find ActivityTypes field definitions?

[Anonymous]

Thanks again Angelo...

Regarding point 2... Is it possible that some of the activity types have to do with internal processes not accesible to the user? I have been able to "map" some activityTypes from the UI (like creating an "Interesting Moment" for example), but some I can't see where they would come from... that's why I wonder if there are some activities that won't have to do with specific actions carried out by the user on the lead

And on the other hand, the point is that our client is offering a service to end-users, so he wants to cover as many activityTypes as possible... Could you provide, if there is one, a list of activityTypes that I should really NOT try to look into (the ones you mentioned that are no really of use)?

Thanks a gazillion...

[Anonymous]

List of "Interesting" Activities customers may want to capture:
VisitWebpage
ClickLink
ClickEmail
FillOutForm
InterestingMoment

List of "Arguably Interesting" Activities but these may result in high volume:
SendEmail
OpenEmail

I have not seen use cases where any of the other types are of interest but in the end is up to your client's value proposition/use case.