Retrieving the Contact ID using external email Address

We are looking an for API details which can return the Contact ID using the email address. The below endpoint is giving that information, however we would like to confirm that the email address should be Corrigo email or can it be external user email address.. for eg, TIAA is customer for Corrigo and can I use TIAA email address to retrieve the Contact ID of the User using below?

https://az-am-ent-f6.corrigo.com/api/v1/query/Contact

If we are not able to retrieve the Contact ID of the User using their TIAA email address using above API, I would like to know how we can get it? or there any different APIs?