You can create e-mail groups for several kinds of tasks. You can then add and delete members as necessary.

Create an e-mail group and add members

Click CRM> Setup> Contact management> E-mail groups> E-mail groups .
Press CTRL+N to create a new e-mail group.
Enter the name of the e-mail group and select an e-mail category.
Click Members.
Select members from the Contacts, the Employeesand/or the Sales unitstab, using the arrows to add or remove them from the E-mail memberslist.

Delete members from an e-mail group

Click CRM> Setup> Contact management> E-mail groups> E-mail groups .
Select the group you would like to remove members from.
Click Members.
Select the members from the E-mail memberslist that you want to delete, and use the arrow to remove them from the e-mail group.

Click CRM> Periodic> Marketing automation> Campaigns.
Select the campaign that the e-mail group is to be based on.
Click Broadcast> Create e-mail group.
Enter the name of the e-mail group and select an e-mail category.
Select the type of mail that defines the e-mail message type sent to the members of the e-mail group.
Click OKto create the e-mail group.

All the targets in the Campaignsform are transferred as members of the newly created e-mail group but are not deleted from the Campaignsform.