How do I check if something is in another sheet (& check a checkbox if it is)?

ro.fei

I have two sheets: a Tracker sheet & Response sheet. My Tracker sheet has a list of all the people that need to be sent a survey to complete, & my Response sheet lists all of their responses to the survey (each person's responses are in a row).

Both sheets have columns with emails in them. I was planning on using INDEX/MATCH (by matching the emails) inside an IF statement, but I can't seem to configure it correctly. Right now the checkboxes are being checked even if the email isn't in the Response sheet. I'm sure I'm forgetting something pretty simple, but I can't seem to figure it out. Any suggestions?

ro.fei

I ended up using IF(CONTAINS(Email@row, {Response Email}), 1, 0) if anyone is curious!

ro.fei

I ended up using IF(CONTAINS(Email@row, {Response Email}), 1, 0) if anyone is curious!