Every now and then you want to add a new user to your MailPress newsletter and/or mailing list, without them having to go through the normal subscription process. For example, to create test users or for people who you meet and give you their email address offline.
It's easy to do this, but not so easy to find. On your WordPress dashboard, select Mails -> All Users. Scoll down to the bottom of the Users list. Click in the box next to the Bulk Add button. Options appear magically to allow you to select a mailing list to add them to, and whether you need them to confirm (i.e. Require Authorization) or not (i.e. Activate); generally, you want to select Activate. Enter pairs of email addresses and names, separated by , and ;. Then click Bulk Add. All new additions get added to the default newsletter and any mailing list you select.
You can also add users via Mails -> Import if you already have the names and email addresses stored in a file.