we are on 11.5.10, as we have configured workflow mailer and notifications is being send by test mailer button. After being confirmed this, we have created a test alert as event base under the alert responsibility having a base table is FND_USER which work only update but still email is not being send on the specified email address which mentioned on the same table.
Pls rever MOS note:
11i : Oracle Alert Alert Check Setup Test [ID 271367.1]
How To Send An Email In A Simple Periodic Or Event Alert? [ID 1162153.1]
How Do You Set Up A Test Event Alert That Sends An Email. [ID 455688.1]