Go to the Mailercloud dashboard.
Click on the filter icon beside <Create New List>
Choose criteria as Email.
Type the email ID you want to search.
The search result will show the specific list to which the email ID belongs.

Go to the Mailercloud dashboard.
Click on the filter icon beside <Create New List>
Choose criteria as Email.
Type the email ID you want to search.
The search result will show the specific list to which the email ID belongs.