Send transactional or marketing emails and SMS to customers with delivery tracking, template management, and compliance built in.
Transactional messaging
Call one API to send password resets, order confirmations, notifications, and alerts. Track delivery status, manage templates, and handle bounces automatically.
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Capabilities
Send emails and SMS through the same API with automatic failover and delivery optimization.
Multisend to email and SMS in one call with broadcast or cascade delivery modes.
Generate and deliver OTP codes via SMS or email with expiration tracking and rate limiting.
Store HTML email templates and SMS formats with variable substitution and versioning.
Track sent, delivered, opened, clicked, bounced, and failed messages in real time.
Send thousands of messages in bulk with queuing, rate limiting, and retry logic handled.
Receive delivery confirmations, bounce notifications, and engagement events via webhooks.
Unsubscribe handling, conversation-based recipient management, and GDPR-compliant processing.
Send thousands of messages in bulk with queuing, rate limiting, and retry logic handled.
Receive delivery confirmations, bounce notifications, and engagement events via webhooks.
Unsubscribe handling, conversation-based recipient management, and GDPR-compliant processing.
Messages delivered successfully to recipients
From API call to message dispatch
Handled across all customers
Why it matters
Deploy a password reset flow in production today. Call the API with recipient, template, and variables. The email arrives in seconds without going through complex configurations.
Send order confirmations via email and SMS delivery alerts using the same function signature. Switch channels by changing one parameter, not rewriting integration code.
Marketing updates your welcome email design in the template editor. The next user who signs up receives the updated email without waiting for a deployment cycle.
Built for Your Workflow
Messages route through pre-warmed IP addresses with established sender reputation. DKIM, SPF, and DMARC authentication configure automatically when you verify your sending domain. Bounce handling and feedback loops protect your reputation over time.
99.9% inbox delivery rate for transactional emails without configuring authentication records.
Send SMS through the same API with automatic carrier routing for each destination country. Delivery status returns synchronously or via webhook, and segment counts show exactly how messages split across carriers.
Reach customers on mobile without integrating separate SMS providers or provisioning phone numbers.
Query message status by ID to see the full event timeline: queued, sent, delivered, opened, clicked, or bounced. Each event includes timestamps and metadata like device type or link clicked.
Debug delivery issues in seconds by tracing the exact path each message took.
Batch operations queue messages with built-in rate limiting that respects recipient server capacity. Retry logic handles temporary failures automatically, and you can track batch progress in real time.
Run large campaigns without managing queues, retries, or delivery pacing yourself.
Features
Each feature is designed to handle message delivery at scale with reliability and compliance.
Send transactional SMS messages worldwide through direct carrier connections.
Send transactional emails with templates, tracking, and high deliverability.
Send OTP codes via SMS or email with built-in generation, expiration, and rate limiting.
Broadcast messages to thousands of recipients with batching and rate limiting.
Unified inbox for SMS, email, and chat with threaded message history.
Consent management, opt-out handling, and regulatory compliance for messaging.
FAQ
Start building with Conjoin today. Free tier includes everything you need to prototype and launch. Scale when you're ready.