Hi, I need some help. I got problem when accept the email. Should be I got 3 email but just 1 email and the next email Robot stop process in UiPath Assistant.
The error as per below:
Thank you.
Try to add a Delay activity with the timer set to 00:00:10 and recheck.
Also, you may check to see if any processes are hanging or blocked after sending the first email. You may try to close the problematic process (*.exe) file after the first email is sent and then retry the remaining emails.
Share your findings with us.
Thank you for you help 
When I run in the studio everything is running smoothly and I got all the emails but when I use attended bot I have that error.
Is it I miss out something?
Check which are the differences between Studio robot and the Assistant robot.
Maybe the robot from Assistant is a different one and it is not having some sort of permissions.
You should know this better.