How to leave only 1 mailing address if it appears in different groups?

Question

Email Marketing

Greetings.

There is a public organization in which work is carried out in various directions. When it is required to notify participants, a distribution group is selected, for example, "management", "Permsky Krai", "ecology". The problem arises when the same address is included in several mailing lists. Those. the person receives 3 identical messages. Hence the question, how to remove duplicate addresses when preparing mailing lists? For example, is there a functionality "select mailing list - expand to final addresses - remove duplicates". Either in the app or in a third party service like minbox?

Answer 1

Depends on what program you are using to send emails.
For example, mailing services have the ability to exclude addresses from send lists using segmentation :

If you have a Microsoft Outlook email program, here is an instruction on how to create a temporary send list in this case.