thankQ will prompt before merging the mailing to create mailings for the contacts with no address or not so it is not necessary to remove them unless for housekeeping purposes.
1.On the View Address Detail for Mailing form click on the drop down beside Remove
2.Select Remove all ‘Without Address’ or Remove all ‘Do Not Mails’
3.Click Yes to confirm
4.Click OK
When you close the View Address Detail for Mailing form and go back to the Mail Manager form you will notice the number of contacts with no addresses is now 0 and the number of contacts loaded has decreased.