Why is Informatica email task repeating the text - email

Question

Why does my On-Failure/Success emails repeat their text, sometimes hundreds of times? The problem affects email tasks both On-Success and On-Failure.
I have a session where I have an On-Failure Email to be sent. I created a Task and am referencing it under the Components.
The email arrives, but the text of the email has been repeated, in this case 41 times. In other emails, I have seen the text content repeated 250 times. Ultimately, I will see an error message in the session log.
Why would the text repeat itself?
In the Task definition the email text is:
** %e **
Folder: %n
Workflow: %w
Session: %s
Status: %e
%b
%c
%i
Mapping: %m
%l
%r
%g
Here is the email itself. I am only showing a portion where you can see the repeating text blocks. In this email, the text repeated 41 times. The text starts with with my first line: '** Failed **'
Why? Bug? We use Informatica 10.0
** Failed **
Folder: Davidson
Workflow: wf_m_Event_Wait_AUS
Session: s_m_Event_Wait_AUS_bo
Start Time: Mon Jun 26 10:25:14 2017
Completion Time: Mon Jun 26 10:25:17 2017
Elapsed time: 0:00:02 (h:m:s)
Mapping: m_Event_Wait_AUS_bo [version 6]
Total Rows Loaded = 0
Total Rows Rejected = 0** Failed **
Folder: Davidson
Workflow: wf_m_Event_Wait_AUS
Session: s_m_Event_Wait_AUS_bo
Start Time: Mon Jun 26 10:25:14 2017
Completion Time: Mon Jun 26 10:25:17 2017
Elapsed time: 0:00:02 (h:m:s)
Mapping: m_Event_Wait_AUS_bo [version 6]
Total Rows Loaded = 0
Total Rows Rejected = 0** Failed **
Folder: Davidson
Workflow: wf_m_Event_Wait_AUS
Session: s_m_Event_Wait_AUS_bo
Start Time: Mon Jun 26 10:25:14 2017
Completion Time: Mon Jun 26 10:25:17 2017
Elapsed time: 0:00:02 (h:m:s)
Mapping: m_Event_Wait_AUS_bo [version 6]
Total Rows Loaded = 0
Total Rows Rejected = 0