Merge duplicate tickets automatically
Updated Nov 9, 2026
Customers often write again before you answer. An auto-merge rule spots the duplicate and merges it into the original ticket, so your team answers once.
How a duplicate is found
A new ticket is a duplicate when it has the same requester and matches an unsolved ticket (New, Open, Pending or On-hold) created within the time window, on the subject or on a field you choose. The new ticket is closed and its comments are added to the oldest matching ticket. Subjects are compared without Re: and Fwd: prefixes, ignoring case and extra spaces.
Only new tickets are checked, right after they are created. A ticket an agent split off from another one on purpose is left alone.
Create a rule
- Open Admin Center, Business rules, Auto-merge and choose New rule.
- Give it a Name, for example "Duplicate payment queries".
- Optional: under New tickets that, add conditions so only some new tickets are checked, for example channel is Email.
- Under Match on, choose Subject or a custom ticket field such as an order or transaction number. Any one matching is enough.
- Set the window under Within: from 1 minute to 7 days.
- Under Merge, decide whether to Tell the requester (the merge comments become public replies instead of internal notes).
- Choose who to Record the merge as. That agent needs the Merge tickets permission.
- Save.
Rules are checked in order and the first one that finds a duplicate merges it. Use Active to switch one off.
See what was merged
Recent automatic merges lists the last 25 merges: when, which rule, which ticket went into which, and what matched.
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