Need to make edits to a contact's information? No problem!
Head to Contacts, then tap to view the contact's profile page.
Tap +ACTION, then Edit contact info.
Edit the email address, name, or phone number of the contact.
If a proposal has been accepted, a contract signed, or an invoice installment paid using that contact's email address, the contact information cannot be edited.
In this case, feel free to create a new contact with the updated email address! If needed, you may archive or delete the old contact.