Removing unwanted/expired email addresses from email suggestions list
Ever wondered when you start typing an email address in your Gmail, how does Google offer an auto complete? Yes, Google maintains an Email Suggestion List exclusively for each email account. Learn how to edit that list.
Do you have more than one email account say one for work and other or personal use? It is easier if you don't have to log into both accounts and if you can send and receive mails from both accounts by logging into one.
If youa re using Gmail filters and want the same filters in other account (of your own or someone else's), you may export your filters from the first account and then import them to new account.