This plugin allows a site admin to send a registration invitation message and link to a list. The list is uploaded as a CSV file containing names and email addresses.

The plugin can be configured using a plugin setting to add a registration code to the registration link that is unique for each user. This code can be used by the the flexreg plugin to enforce by-invitation-only registration.

You can access the plugin using the "Send invitations" link in the admin sidebar menu.

The messages are queued for sending by a cron job. You must have the separate message queue plugin here:

http://community.elgg.org/pg/plugins/kevin/read/515768/message-queue

installed to actually send the messages.