...
If you are granted access to a delegated email account, you can access it by clicking on your profile picture or email address in the upper-right corner. Choose the shared email address from this menu, and it will open in a new tab within your web browser.
Delegates will never need the password to the shared account, access will be granted through your personal Gmail account.
The delegated email account will allow you to send and receive mail sent to that address, and label or filter messages as you would in your own mailbox. Any mail organization performed will be seen by all delegates.
Any messages you send from the delegated account will have your name listed in addition to the account's name, so the sender will appear as: Your Name (sent by Delegated Account). Replies to any sent messages will be delivered to the shared account.
As a delegate you can access the shared accounts contacts by clicking the Contacts link. Clicking the To, Cc, or Bcc links in the mail compose window will also bring up your contacts.
You will not be able to change the delegated account's password or account settings, or chat as the shared account.
Any messages you send from the delegated account will have your name listed in addition to the account's name, so the sender will appear as: Your Name (sent by Delegated Account). Replies to any sent messages will be delivered to the shared account.