Basic Permission to Operate the functionalities of Email Marketing Campaign for a custom role.

Scenario: Not able to operate all the basic operations for Mass Email Campaign in a custom role

Solution: Setup > Users/Roles > User Management > Manage Roles(Administrator)

Custom Role: Click Edit
Transactions:
Permission:
Select CRM Groups, Marketing Campaigns, Marketing Template, Set Up Campaign Email Addresses, Marketing Campaign Reports, Perform Search
Level: Select Full

If need we could also add

Permission:
Select Mass Update, Employees, Vendors, Contacts, Customers
Level: Select Full