Send campaign events wherever you need them
Trigger a webhook whenever a lead is created or added, replies, or bounces — or when an email sends or gets opened. Configure it per campaign, and verify every payload came from Sendbox using a secret-key signature.
Lambda Group
Live events, no polling required
Each campaign keeps its own webhook endpoints and event subscriptions, so things stay organized.
Every webhook ships with a signature generated from your secret key, letting you confirm it genuinely came from Sendbox.
lead.created, lead.added, lead.replied, lead.bounced, email.sent, and email.opened — subscribe to exactly the ones you need.
Webhooks reach any HTTP endpoint, which means they work with CRMs, automation tools, and backends you built yourself.
The moment it happens, your stack knows
Send webhooks to any HTTP endpoint — your CRM, Zapier, Make, n8n, or something you built yourself. Each campaign carries its own webhook configuration.
Subscribe to whichever events matter: lead.created, lead.added, lead.replied, lead.bounced, email.sent, or email.opened.
Each payload arrives with a signature you can check against your secret key, so you know the request is genuine.
Push replies and bounces into your CRM the instant they happen, so your pipeline is never out of date.
Kick off n8n or Make workflows whenever a lead replies or bounces — build whatever post-engagement automation your process needs.
Stream campaign events straight into your warehouse for reporting or attribution work you'd rather run yourself.
Delivered instantly, never batched
Signed webhooks you can actually trust
Sendbox configures webhooks per campaign, not as one global setting. Every endpoint gets its own secret key for signature verification, so you can confirm a payload is genuine. Six event types cover a lead's entire lifecycle inside a campaign.
Six events, the full lifecycle covered
Subscribe to lead.created, lead.added, lead.replied, lead.bounced, email.sent, and email.opened, configured however you like per campaign. Every payload carries a signature from your secret key so you can verify it on your end.
Got questions? We've got answers.
Still stuck? Talk to us →Six: lead.created, lead.added, lead.replied, lead.bounced, email.sent, and email.opened, each configurable independently per campaign.
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