n8n SendRaven Support Email Reply Agent (OpenAI In-Thread)

Instantly handle SendRaven support email replies—automatically decide, reply in-thread, or escalate

The n8n SendRaven Support Email Reply Agent (OpenAI In-Thread) workflow receives inbound support emails from SendRaven, loads the full email thread, and uses an OpenAI-powered agent to determine whether to reply, mark the thread as handled, or escalate—then sends any reply back into the same conversation thread.

What this workflow does

• Receives inbound support emails from SendRaven via a signed webhook endpoint.
• Verifies authenticity by validating the HMAC-SHA256 signature and timestamp from request headers, returning 200 or 401 for invalid signatures.
• Deduplicates retries and filters out automated messages (e.g., auto-replies) so only human inbound emails are processed.
• Fetches the full conversation thread from the SendRaven API and formats a transcript with sender and authentication context.
• Uses OpenAI to decide next action: reply with a plain-text response, mark no reply needed, or route to an escalation placeholder step.
• Sends threaded replies via the SendRaven Emails API using the original message ID, plus an idempotency key to prevent double-sends.
• Marks threads as handled when no reply is required.

Use cases

• Support teams using SendRaven who want faster first responses with replies posted in the same email thread.
• SaaS operators who need agent-based triage—reply when appropriate, otherwise escalate to humans.
• n8n automation engineers building reliable webhook processing with security, deduplication, and idempotency.

Technical details

• n8n nodes/workflow steps: webhook, if, set, no op, crypto, switch.
• Security: HMAC-SHA256 signature + timestamp validation; responds 200/401.
• SendRaven integration: uses an API key (HTTP Bearer) to read threads and send threaded replies.
• OpenAI chat model powers the reply/no-reply/escalate decision.

Category: n8n automation workflow • Stack: OpenAI + SendRaven • Best for: support automation with secure, in-thread email replies.