Drupal 7 can now use your site name in the From: header for e-mails

Drupal 7 now has an option to use the site name (i.e. the value of the site_name variable) as the “Display Name” in the From header in system e-mails.

For example this would mean the sender might be “Acme Website” <[email protected]> as opposed to just the e-mail address alone.

In order to avoid disruption, this is not enabled by default for existing sites. New sites will have it enabled by default if they start from a new copy of default.settings.php

The feature can be enabled by setting the following variable to TRUE:

$conf['mail_display_name_site_name'] = TRUE;