Updating facebook via email
The two type of tasks that are reported are: Once the email is sent, there is a system setting parameter which defines the number of validity days to which the email report form may be sent back for the system to update the progress of the tasks.
Note: There may be a situation when the system does not let you update the progress from within received email.
I believe this is the way Clarizen is officially moving - but I am impatient.
If they start adding (internal) notes this may be a problem.
These will be customizable in the future, but you cannot remove notes at the moment.
If you bring in customers, you may want to consider only sharing high level information such as Roadmaps (maybe even Gantts).
And is "scheduled progress reports" for e-mail only users?
Users would never get more than one a day (the schedule is based on the system settings).