I know that in most cases it's redundant to include your email address in your signature block since it's usually in the header. I say "usually" because sometimes an email trail can go through a number of employees, and the person you may need to contact is buried in the middle where their email is not apparent (since the email did not come from them). For example: Bob Smith and Jane Doe work at the same company which uses an email format of "firstname.lastname@example.org.” John has a lengthy back-and-forth email conversation with a customer, and somewhere along the line Jane gets copied on one of those emails. Eventually, John suggests the customer contact Jane, but doesn't copy Jane so her email is buried in the middle and there's no associated header which would show her address. If the customer assumes her email is "email@example.com" because Bob's is "firstname.lastname@example.org", he runs the risk of contacting employee John Deere. Because Jane was hired after John and just happens to have the same initials, she was assigned "Jane_Doe@abc.com". So my question is really this: Should JANE include her email address in her signature block to avoid confusion that might occur 1% of the time? Should EVERYONE include their email address in their signature block for consistency? Or should Jane just leave it off since it's not likely the situation described above will occur very often?