A marketing manager sent an email template last week to their "Hot Prospects" list, which...

Create a new dynamic list using the criteria "Prospect email template", the template name, and "was not received" and then use it as therecipient list when sending the email template.

Send the email template to the "Hot Prospects" list, but select the "deduplicate" option to remove recipients that already received the email last week.

Create a new list of the prospects that received the email last week and then use it as a suppression list when sending the email template to the "Hot Prospects" list.

Send the email template to the "Hot Prospects" list like last time; the prospects that received it before will be automatically suppressed from receiving the same email template.