In this example we have chosen to set the To recipient to be the 'Assigned To' user lookup field in the list (e.g. the person who has been assigned to complete the individual task) and CC a fixed address.

You can separate multiple addresses with a semicolon (;)

For example if you want to be able to manually enter an email address in a text field you can then select that field here. You must ensure that the field you select contains valid email addresses.

This feature is useful in 2 scenarios :-

1) You have people who are not Users of SharePoint in your 'Contacts' list in a SharePoint Site that you want to email reminders to.

2) You have custom email distribution lists stored in a separate SharePoint list.

You must ensure that the field contains a valid email address (or addresses) and you can't use this feature with Lookup fields unless you setup the lookup field to display the column containing the email address.

This is useful if you want to email everyone in a 'Contacts' list or perhaps a particular group of site users.

The first entry on the drop down allows you to email every person who has an account in the SharePoint user database by selecting "* All Web Site Users".

Below that are all the Site Groups - e.g.

* All Web Site Users *
  - Top Level Site Visitors
  - Top Level Site Members...

Further down you will see each list in your site and its associated views - e.g.

Your List
  - All Items
  - Another View
Another List

If you select a list in this dropdown you must also select the field that contains Users, Groups or SMTP email addresses

Finally - select if emails should be sent To, CC'd or BCC'd to these users.