On popular demand from readers, I am going to cover Workflow Notification Mailer in Oracle Applications R12/12i.
Workflow notification mailer setup in R12 is similar to 11i ( In both release 11i (OWF.H and higher in 11i) & R12 are Java Mailer)
* Previous version of Notification Mailer in 11i was based on C also called as C Mailer

Things to note
1. You use Oracle Application Manager (OAM) to configure Workflow Notification Mailer.
2. There are two kind of Notification (Outbound & Inbound) in Workflow Mailer
3. For Outbound Notification, CM (Concurrent Manager) node should be able to connect to SMTP (Simple Mail Transfer Protocol) server/relay.
4. For Inbound Notification (Optional), CM node should be able to connect to IMAP (Internet Message Access Protocol) Server.
5. Log file for Workflow Mailer Notification are at $APPLCSF/$APPLLOG/FNDC*.txt
6. Workflow Notification Mailer in background run as Concurrent Manager (Workflow Mailer Service, Workflow Agent Listener Service)
7. If you don’t wish to send mail notification to end user (from Dev/Test instance) then configure Test Address in configuration screen.


Step to configure Workflow Notification Mailer

1. Login to Apps R12 with System Administrator Reponsibility
2. under Workflow : Oracle Applications Manager click on Workflow Manager

workflow notification mailer

If this is first time you are configuring Workflow Notification Mailer in Oracle Apps R12/12i you will see Notification Mailers as unavailable as shown in screenshot

Click on Notification Mailers

Workflow Notification Mailer Setup in Oracle Apps R12/12i

In next screen (as shown below, click on Edit Button)

Workflow Notification Mailer Setup in Oracle Apps R12/12i

Here you have option to select Inbound notification setup or Just outgoing Notification Setup.

Workflow Notification Mailer Setup in Oracle Apps R12/12i

Provide SMTP Server Name (ensure that CM node should be able to connect to SMTP Server or SMTP Relay)

Workflow Notification Mailer Setup in Oracle Apps R12/12i

Uncheck Inbound Processing (from above screen), if you don’t wish to configure Inbound Notification Mailer.

If you wish to configure Inbound Notification as well then ensure IMAP Server should be configured with a valid user (create Inbox, Processed & Discard folder for this User)

Click on Apply button to finish configuration, at this stage Notification Mailer will test SMTP Server & IMAP Server connectivity.

For Advanced setup, click on Advanced at top right of configuration screen.
Metalink Notes for Notification Mailer
1. 453137.1 Oracle Workflow Best Practices Release 12 and Release 11i
2. 274764.1 Oracle Workflow Cartridge Workflow Java Mailer Setup Test
3. 433359.1 Tracking Workflow Notification Event Messages
4. 456921.1 Queries Related to Alert and Mailer Integration Post RUP4
5. 454706.1 How to Stop mails from Workflow Notification Mailer