SMSy

SMSy is a software platform that provides programmatic access to short message service (SMS) messaging. It is used by developers and businesses to send outbound SMS and receive inbound replies through application programming interfaces and cloud-based services.

Typical features include a RESTful API for sending messages, webhooks to receive inbound messages, support for two-way messaging, number provisioning, and delivery reporting. Many implementations offer international coverage, message templates, scheduling, rate limiting, and basic analytics.

Under the hood, SMSy-like services usually comprise an API gateway, a message router, carrier connectors, a numbers pool, and storage for logs. They often support SMPP compatibility for enterprise setups and provide SDKs or plugins for popular platforms and CRM or e-commerce integrations.

Common use cases include transactional notifications (such as order confirmations and OTP codes), two-factor authentication, appointment reminders, and customer engagement campaigns, subject to applicable opt-in requirements. Compliance features may include opt-out handling, data retention controls, and encryption of sensitive payloads.

Because features and availability vary by provider and region, potential users should verify supported carriers, pricing, and regulatory compliance before deployment.