If you’re logged into the wrong account, click your profile icon in the upper-right side of the page and then either select the proper account (if it’s signed in) or click Add account and enter your email address and password when prompted.

As long as you add the name of your mailing list to the BCC field instead of the To or CC field, the people on your mailing list won’t see the email addresses of the other people on the list. This protects the privacy of your mailing list members and is good mailing list etiquette. Technically, you can add this label to the To: field instead. But if you do that, everyone on the list will be able to see and reply to all other members. Don’t do this unless everyone on the list specifically asked to join a discussion list—when people reply, it could create way too many emails for list members, and there’d be no way for them to unsubscribe. [7] X Research source

The simplest way is to start typing the name of your mailing list into the “BCC” field. When the mailing list label appears as a suggestion, click its name to quickly add the mailing list members to the “BCC” field. If you have trouble finding your mailing list label this way, click BCC in the upper-left corner of the window (below the “To” field) to expand your list of contacts. Select the mailing list label from the drop-down menu at the top-right corner, check the “Select All” box, and then click INSERT at the bottom-right.