Q: How to delete undesirable contact email addresses from Gmail auto-complete list?
A: Sometimes you may find invalid email addresses in the Gmail auto-complete list such as suggested sender or recipient email addresses. To delete those undesirable contacts, from Gmail. click the icon “Contact” (or go to https://contact.google.com). Then search the contact’s name or email address from the Search bar on the top. Then click the 3 vertical dots at the right side, and from the drop-down list, select Delete