Mailboxes

A mailbox is a dedicated inbound address plus rules for what to extract from email that arrives there and where to send the result. Most workspaces have one mailbox per source — invoices from one supplier, orders from another.

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Create a mailbox

Click New mailbox. BounceBox generates an address like mail-7k2f@bouncebox.app automatically. Only the local part (before the @) is editable — pick something memorable like invoices-acme. If the address is taken you’ll see: That address is already taken — pick a different local part. Starter allows 2 mailboxes; Pro and Custom are unlimited.

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Editor reference

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Webhook section

Shown when output is WEBHOOK or BOTH:

• URL — must be a public HTTPS endpoint. Localhost and private addresses are rejected.
• Headers (JSON object) — custom headers sent with every POST.
• Body template — optional custom payload using placeholders; leave empty for the canonical JSON payload.
• Signing secret — optional per-mailbox secret; defaults to your workspace secret. See Webhooks.

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Reply email section

Shown when output is REPLY EMAIL or BOTH:

• Reply to address — where replies to the reply email go.
• Subject template — defaults to Extracted: {{subject}}.
• Body template — the reply body; the default includes the extracted data. See Reply emails.

Click Save — the page confirms with “Saved.”

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Describe it with AI

Don’t want to fill in fields? Open Describe it with AI, paste a plain-English description of the mailbox — “invoices from Acme Supplies, webhook to our ERP, always reply to accounts@” — and click Parse config. Review the generated settings and save.

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Pause vs delete

• Pause stops a mailbox from processing email while keeping its history. Pausing is done from the mobile app with the Receiving switch on a mailbox — see Mobile app.
• Delete removes the mailbox permanently, along with every email it received. There is no undo — pause instead if you might come back.