
a) you (as the logged in user) need to have rights to send/receive on behalf of the account you want to use. Your IT can set this up; otherwise, that user needs to be logged in.
b) I am not aware of a limit to the number of emails being pulled down, someone else might have more insight.
c) if you can get them all in, do the following:
For each %CurrentEmail% in %RetreivedEmails%
If %CurrentEmail.Date% is between 04/01/2022 and 04/30/2022
Move to folder
EndIf
There are other posts on how to get dates such as Ending Day Last Month and Beginning Day Last Month
Good luck!