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Set the mailbox’s Output to REPLY EMAIL or BOTH and BounceBox sends the extracted result as a reply to the original email — useful when the receiving end is a person or a mailbox-based workflow rather than an API.

Configuration

Placeholders

Use these in the subject and body templates:
  • {{mailbox}} — the mailbox address the email was sent to
  • {{received_at}} — when the email arrived
  • {{email_id}} — the email’s identifier
  • {{from}} — the original sender
  • {{subject}} — the original subject
  • {{attachments}} — the attachment list
  • {{data}} — the extracted JSON
Missing fields render as empty strings — no warning is added for them.

Loop protection

A reply email that triggers another reply can spiral into a loop — two automated systems answering each other. BounceBox suppresses replies that would bounce back into BounceBox addresses or into known automated senders (auto-submitted and bulk mail), and caps reply storms, so configuring a reply output can’t create an email loop.
Suppressed replies complete without a delivery-log entry — they count as the safe outcome, not a failure. Check the email’s status and details in the inbox if a reply you expected never arrived.

Retries

Reply delivery is retried up to 3 attempts with growing backoff, same as webhooks. Each attempt appears in the delivery log.