Hello Pankaj,
please check that the right options are selected for transaction type and category
SAP Solution Manager Implementation Guide
Customer Relationship Management
Transactions
Settings for Activities
Maintain Categories, Goals, and Priorities
Assign Categories to Transaction Types
Here select this entry:
Transaction Type: 0005 Outgoing E-Mail
Category : INT E-Mail > you have to change this into
'401 E-Mail'
regards,
Javier