Within Teamwork Desk, you can choose to include the ticket number in the subject line of your reply to a customer.
The ticket ID number is assigned by Teamwork Desk and will appear within brackets in the subject line:
- '[83976516] I hope you can help with my issue...'
To enable this, click your profile icon to the top right of the main navigation bar and select Settings.
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In the Settings area, go to the General tab and select Site Settings from the left pane.
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Under Message Settings, you will see an option to enable Include ticket number.
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Once enabled, the ticket number will be included in your replies to the customer, and can be used for reference by them.
For more information, see: Creating a New Ticket from an Existing Ticket