SharePoint Alerts and Reminders Web Part via Email & SMS

External Host Path

This optional setting is available in Options Tab. It allows replacing the host portion of the {sitelink}, {itemlink} and {itemurl} tokens that are inserted in e-mail alert messages. It is usually used to provide SharePoint users logged in from external local domain with a public host path to the SharePoint web server. For example, if you enter, outside users will receive alerts with links on item but site links in their e-mail alerts will be changed from http://YourInternalServerName/ to and will be available for those outside of the network.