Mailing List Cleaning

HI I have a 70,000 list that i am in the process of cleaning to flag dead email addresses. Once flagged as do not send in the list how can I identify If i have already flagged and email address or not weeks down the line say.



Do i need to do this via the database and if so what table should io be looking at or is there are facility in Mautic to lost all the flagged addresses in a mailing list?

HI I have a 70,000 list that i am in the process of cleaning to flag dead email addresses. Once flagged as do not send in the list how can I identify If i have already flagged and email address or not weeks down the line say.

Do i need to do this via the database and if so what table should io be looking at or is there are facility in Mautic to lost all the flagged addresses in a mailing list?