Reprocessing Existing Messages
For some Message Source types (Email, Database, File Pickup), ThinkAutomation checks if the message already exists in the Message Store before sending the message to an Automation for processing. This ensures the same incoming message is not processed twice.
If you want to reprocess existing messages you can either use the Reprocess option when viewing the Message Store, or you can delete the existing messages from the message store. For Email Message Source types, if you delete messages from the Message Store you will then need to click the Reset Sync Status button on the Message Store properties. This clears any sync status. ThinkAutomation will then start reading all messages again - and provided the messages do not already exist in the Message Store, they will be processed again as new messages.