Notices and invoices for people who asked to receive them
Send to lists on WhatsApp with automatic opt-out, an auditable consent trail, per-number sending limits and an automatic pause when the failure rate rises.
Notices and reminders for people who asked to receive them
Invoices, confirmations and reminders for your opted-in contact base. You upload the list and the template; bZapper records consent, honors anyone who asked to stop and tracks delivery.
Build the template
Use variables like {name} and {amount}, plus up to 3 variations to personalize the message or test which wording works best.
Upload the list
Each contact with their own content. Anyone who already replied “STOP” is left out automatically.
Follow the delivery
Sending stays within each number’s limits and you watch delivered, read and failed in a live dashboard.
What bZapper handles for you
- Per-number limits
Configurable sending caps per number and time windows, so the campaign fits your operation.
- Delivery continuity
If a number becomes unavailable mid-campaign, another takes over and each contact keeps talking to the same sender.
- Automatic opt-out
Anyone replying STOP is suppressed immediately and receives nothing further. It is recorded in the consent trail.
- Automatic pause
If the delivery failure rate rises, the campaign pauses on its own and alerts you — so you can review the list before continuing.
{name} and {amount} filled per contact · variations to personalize or test
Campaigns require the Pro plan and a contact base with recorded consent. By default, 2 numbers connected for at least 7 days — adjustable per account.
WhatsApp over an API, without interruption
Delivery is engineering. Every number in the project has its own sending limits, continuous health monitoring and real-time alerts. When a number becomes unavailable, the conversation continues on another — with no action from you.
- Automatic failover when a number becomes unavailable
- Health of every number monitored continuously
- Conversations unified per contact, even when the number changes
- Real-time alerts when a number goes down
Start sending over WhatsApp in minutes
Create your free account, generate an API key and make your first send today. No card, no red tape.