I imported some contacts from someone else’s address book and if I send a
email from these imported contacts, the email’s “From” field list the person
from whom I imported the contact from, instead of my email address.

How do I remove the other persons email and replace it with mine from an
outlook contact? The specific field can be found opening a contact, Click on
“Show All Fields”, Select From “All Post Fields” and in the body you will see
“From” with an email address that is not mine?

Any suggestions?