Search for an item in a database from every item present

Hello Everyone,
I have a database which has a field named email, which has multiple email addresses.
Now, I have a condition that if User Input Email Address is present in my email database, then do some action. How can I write a logic for it?
I am confused because in Do a search for I only get first item, second item etc. How to search in all items and check if it is there or not?

got the solution, just did search for each item and it is working fine.