bMail has a feature to allow another person access to your e-mail account: this allows them to send, read and delete messages. For example, a spouse, admin or co-worker may need continued access for various reasons, so the ability to delegate account rights to them in certain situations may be critical (especially in the case of departmental accounts).
Delegated access in bMail allows others to handle ones e-mail, however it disallows them from changing your password, using chat, or changing misc. account settings. Further, only up to 25 users may be granted this type of access at any one time.
To enable delegation, begin by:
1. Clicking the gear icon in the upper right corner. 
2. Select Settings from the drop down menu. 
3. Select the Accounts tab from the Settings menu. 
4. Next to Grant access to your account, click the Add another account link.
5. To the right of Email address, enter the mail address of the person who will be
given delegated access to this account.
Note: the e-mail address must end with either the @berkeley.edu or
@subsite.berkeley.edu domain addresses. In other words, @hotmail.com,
@yahoo.com and even @gmail.com addresses will not be allowed access.
6. Click the Next Step >> button 
7. If the displayed email address is correct, click the Send email to grant access
button.
8. A confirmation email will now be sent to the address specified. The recipient
must open the letter then click the verification link to be granted access as a
delegated account.
Once this has been done, they may now access your bMail address.