What is SMS API?

An SMS API (Application Programming Interface) allows developers to programmatically send and receive text messages, integrating SMS capabilities directly into applications, websites, and business systems.

SMS API Use Cases

Notifications:

Order confirmations

Shipping updates

Appointment reminders

Account alerts

Authentication:

Two-factor authentication (2FA)

Password reset codes

Login verification

Marketing:

Promotional campaigns

Abandoned cart recovery

Re-engagement messages

Operations:

Internal team alerts

System notifications

On-call paging

Key API Features

Send SMS: Programmatically send messages

Receive SMS: Webhook for incoming messages

Delivery status: Track message delivery

Number management: Provision/manage numbers

Contact management: Manage subscriber lists

API Integration Methods

REST API: HTTP requests with JSON SDKs: Pre-built libraries (Node.js, Python, PHP) Webhooks: Real-time event notifications Zapier/Integrations: No-code connections

Common API Operations

```

POST /messages # Send SMS

GET /messages/:id # Get message status

POST /contacts # Add contact

GET /reports # Analytics data

```