To add a member to your list, you can either :

As well as using the web interface, listowners can add members in the 'traditional' way by sending email commands to the server. These commands can be placed in the Subject: header or in the body of the message, although we recommend you should use the body of the message and leave the Subject: header blank . The address that you use to send commands to the Sympa server is sympa@newcastle.ac.uk
For example :
From: "Joe Bloggs" <joe.bloggs@newcastle.ac.uk> To: sympa@newcastle.ac.uk QUIET ADD newusers fred.bloggs@newcastle.ac.uk Fred Bloggs QUIT
will add the user Fred Bloggs to the newusers list (without their notification), and then quit. (The QUIT command is there to tell the server to stop processing - it's necessary if you have a signature automatically attached to your mail).
There are 3 different variations on adding users by email that you need be concerned with :
QUIET ADD listname username@domain Firstname Lastnamewill add a user to a list without their being sent a 'You have been added to the list' message. If you add a member this way, you will be expected to authorise the process by sending a further email command (see below)
ADD listname username@domain Firstname Lastnamewill add a user to a list with them being sent a 'You have been added to the list' message. If you add a member this way, you will be expected to authorise the process by sending a further email command (see below)
INVITE listname username@domain Firstname Lastnamewill invite a user to join a list (ie. it will add them to the list only after they have confirmed). The user will be sent an email asking them to subscribe.
Authorising additions to a list After adding a member, you will be sent back an e-mail asking you to authorise the subscription of the member (to which you reply using the AUTH command). This is a security measure intended to prevent a forged listowner address being used to indiscriminately subscribe members without authorisation. The email you receive will look something like this :
From: <sympa@newcastle.ac.uk> To: "Joe Bloggs" <joe.bloggs@newcastle.ac.uk> Someone (hopefully you) requested a user of list newusers to be added or removed. If you want this action to be taken, please send an e-mail to sympa@newcastle.ac.uk containing auth 843c5df2 quiet add newusers fred.bloggs@newcastle.ac.uk Fred Bloggs If you do not want this action to be taken, simply ignore this message.You will be sent one of these emails per user you add by email - so if you add multiple users by the email interface, then we recommend that you use the webinterface for multiple (ie. bulk) additions.