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Before debugging, have these ready: your mail host (Gmail, M365, …), the channel status in your OpenCX dashboard, and a recent message or ticket ID if available.
Looking for setup steps? See Create Email Agent. For routing logic and session matching, see Email Flow.

Common Troubleshooting Scenarios

SymptomLikely causeWhat to do
Pending a long timeRule not delivering to [email protected], or filters blocking the testSend a manual message to your support address and verify a copy reaches the forward destination.
Failed after ~5 minutesInbound never showed your registered address in ToInspect headers (BCC-only paths may not match). Fix the rule, then re-run the wizard test.
AI replies to automated or out-of-office emailsAuto-replies and notifications are forwarded alongside real mailBlock the sender in Blocked Contacts — add known noreply@ and do-not-reply@ domains proactively.
Customer receives duplicate AI repliesCustomer sent multiple messages before the first AI reply arrivedEach new message triggers a separate response. Ask customers to wait for the first reply before sending follow-ups. If duplicates persist on single messages, contact support.
If the connection test stays Pending or ends Failed, the problem is almost always forwarding or headers — not a platform outage on our side.

AI Not Replying — Checklist

Work through in order. Stop at the first match.
  1. Autopilot disabled — Enable it for email under Autopilot settings.
  2. Helpdesk permissions — If you use Zendesk or HubSpot, verify the AI user has full agent permissions (not Contributor or Light).
  3. Provider rejected the message — Check your helpdesk logs for delivery warnings or invalid-comment flags.
  4. Blocked contact or domain — Confirm the sender is not on your blocklist.
  5. AI chose not to reply — Low-confidence answers, prohibited topics, and human-assigned sessions do not produce an outbound email.

What Each Message Must Include

Messages that don’t meet these requirements are silently skipped.

New emails

The To field must contain the support address you registered in the dashboard (e.g. [email protected]).

Replies to existing threads

Must come from the same sender as the original email and include the session token — either [12345] in the subject or Ref: #12345 in the body.

Expectations

AreaDetail
After mail hits the shared forwarding addressAllow about one minute after forwarding.
Connection test (UI)May take up to ~5 minutes before timeout.
Large volumesLarge volumes may take multiple cycles to process.
Session auto-resolutionEmail conversations with no activity auto-resolve after a configurable window. Contact support to adjust your org’s threshold.

Impact Of Misconfiguration

Misconfigured rules can send the wrong mail into OpenCX for an address you registered — prefer dedicated support addresses. DNS and mailbox ownership remain your responsibility.

Create Email Agent

Re-check domain, provider setup, and connection test.

Email Flow

Re-check session matching, threading, and outbound format.

Autopilot And Topics

Verify channel-level Autopilot and topic rules.

Human Handoff

AI to human escalation — applies to email sessions.