Hi Jason,
Downloading of email attachment is done in 4 steps:
1. Setup Receive Mail Task task with 'Get mails list' action . Specify
the criteria you want to use to retrieve the required emails. Set
package variable where you want to store the list (type Object).
2. Setup standard 'For Each Loop' container to iterate over the list
from step 1.
3. Inside the loop container , insert 'Receive Mail Task' with 'Get
mail' action. For MailVariable parameter set to the current iterated
item you have set in step 2. Setup local file name where to save the
email .eml file.
4. Inside the loop container, insert 'Receive Mail Task' with 'Open
mail' action. For Local parameter set to the local parameter you have
set in step 3. Specify for Attachment parameter the folder where you
want to store the email attachments.
I would also recommend you review the sample packages linked at the
bottom of the 'Receive Mail' Task documentation page here:
http://www.cozyroc.com/ssis/receive-mail-task