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Sendable
About Sendable
Sendable is an API-first service that automates the creation and delivery of transactional messages such as emails, SMS, and push notifications. It replaces traditional template-based systems by dynamically generating message content in real time based on event names and associated data provided by developers. Within half a second, the service drafts subject lines and message bodies while preserving all input values exactly as provided, ensuring accuracy and consistency. Sendable handles message delivery through authenticated infrastructure, guaranteeing secure transmission and reliable inbox placement. Every send is logged for audit purposes, providing full visibility into message delivery and performance. The platform is designed for production environments, offering granular access control through per-key permissions and comprehensive request logging without using customer data for model training. By eliminating the need for manual template maintenance, Sendable enables rapid iteration and reduces operational overhead for teams building scalable notification systems.
Key features
- One-line API call to send messages
- Event-driven message generation
- Real inbox delivery with tracking
- Per-key access control and key rotation
- Full request and delivery logging
- No template variables or manual updates
- Preserves exact values for IDs, dates, and amounts
- Optimized for low-latency production use
Use cases
- Onboarding and welcome messages
- Password reset and security notifications
- Billing and payment failure alerts
Pros
- No templates to design or maintain
- Values inserted verbatim without alteration
- Sub-second copy generation latency
- Full delivery logs and audit trail
- Free tier of 500 messages per month
Cons
- No free-form message customization beyond event data
- Limited to transactional use cases
- Requires integration via API key
Frequently asked questions about Sendable
What does Sendable do?
Sendable automatically writes and sends transactional messages by passing an event name and associated data. It drafts subject lines and bodies in under half a second while preserving all values exactly as provided.
Who is Sendable designed for?
Sendable is designed for developers and production teams who need to send transactional messages without maintaining templates or manual copy updates.
How does Sendable handle data safety?
Sendable treats all passed values as locked data, inserting them verbatim without editing or rephrasing. Payloads are encrypted in transit and at rest, and not used for model training.
Does Sendable require a dashboard or manual setup?
No, Sendable eliminates the need for a dashboard or manual template maintenance. Messages are generated and sent with a single function call.
What integrations does Sendable support?
Sendable provides a single client library (npm i sendableme) that works with Node and edge runtimes, covering most JavaScript-based stacks.
How do I get started with Sendable?
Get started by signing up for a free API key, which includes 500 messages per month without requiring a credit card.