An agency doesn't have a sender reputation. A domain and an IP do.
Sender reputation isn't your agency's. It belongs to a domain and an IP, and what protects one client from another's mistakes depends on which one you share.
Sender reputation isn't your agency's. It belongs to a domain and an IP, and what protects one client from another's mistakes depends on which one you share.
Tags in one account are fast to set up, until a suppression or a segment crosses a client boundary it shouldn't. What separate client accounts fix instead.
Running email for several clients needs more than separate logins: each client's sending reputation has to stay separate too. Here's what that requires.