Sinch SMS API
Sinch SMS API lets applications send and receive SMS messages worldwide.
What Sinch SMS API is
Sinch SMS API lets applications send and receive SMS messages worldwide. Its listed features include two-way messaging, delivery reports, traffic controls, scheduled messages, and a testing sandbox. Sinch advertises more than 600 direct carrier connections, direct-to-carrier routing, SLA-backed uptime, and prioritized routing for one-time password delivery. Built-in AI monitors traffic for smishing, bot activity, and artificially inflated traffic. Businesses can use the API for campaigns, customer updates, identity verification, and service messages. SDKs are listed for Java, .NET, Node.js, Python, PHP, and Ruby. Integrations include Adobe Campaign, HubSpot, Shopify, Salesforce, SAP, and Zapier. The SMS API page states GDPR compliance and ISO 27001 certification; Sinch’s Trust Center notes that listed certifications may apply to specific products. New Sinch Build accounts receive trial credit, a default project, and API keys without a credit card. The service is API-based, and public plan details include usage-based, destination-specific pricing. The listed inbound-message rates for 10DLC and short code are $0.01 per message, with carrier fees applying.
Good
- Supports two-way SMS and inbound webhooks.
- Offers delivery reports, scheduled messages, and traffic controls.
- SDKs cover six listed programming languages.
- Trial credit is available without a credit card.
- Integrations include Salesforce, Shopify, and HubSpot.
Watch out
- No free plan is listed.
- Pricing varies by destination and carrier fees apply.
- Listed 10DLC and short-code rates are per inbound message.
Who it suits
Sinch SMS API may suit businesses sending alerts, verification codes, campaigns, updates, or customer service messages through applications. Developers can use its SDKs or API documentation to get started.
Verdict
Sinch provides an API for application-based SMS, with both inbound and outbound messaging features. Review destination rates and carrier fees for the routes and message types your service needs.
Plans and prices
From Sinch SMS API's own pricing page, checked 24 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Pay as you go | Priced on request | Usage-based SMS pricing · Destination-specific rates |
| Pay as you go | — | Usage-based SMS pricing · Destination-specific rates |
| Sinch SMS API (pay-as-you-go; 10DLC) | $0.01, paid once | 10DLC · carrier fees apply · Per inbound message; carrier fees apply. |
| Sinch SMS API (pay-as-you-go; short code) | $0.01, paid once | Short code · carrier fees apply · Per inbound message; carrier fees apply. |
The facts
Each one read from Sinch SMS API's own pages, with the date it was checked.
What it does
- Carrier network
- Sinch says its SMS service has more than 600 direct carrier connections.checked 4 Oct 2026
- Compliance
- The SMS API page states that Sinch SMS API is GDPR compliant and ISO 27001 certified.checked 4 Oct 2026
- Delivery
- The service advertises direct-to-carrier routing, SLA-backed uptime, and prioritized routing for OTP delivery.checked 4 Oct 2026
- Fraud prevention
- Built-in AI monitors traffic and detects or blocks smishing, bot traffic, and artificially inflated traffic in real time.checked 4 Oct 2026
- Inbound webhooks
- Yeschecked 24 Sep 2026
- Integrations
- Sinch’s integrations page lists platforms including Adobe Campaign, HubSpot, Shopify, Salesforce, SAP, and Zapier.checked 4 Oct 2026
- Messaging features
- Listed features include two-way SMS, delivery reports, traffic controls, scheduled messages, and a testing sandbox.checked 4 Oct 2026
- Purpose
- Sinch SMS API lets applications send and receive SMS messages worldwide.checked 4 Oct 2026
- SDK languages
- Java,.NET,Node.js,Python,PHP,Rubychecked 24 Sep 2026
- Short code support
- Yeschecked 24 Sep 2026
- Support
- Sinch’s product page directs prospective customers to contact sales or use developer documentation to get started.checked 4 Oct 2026
- Trust certifications
- Sinch’s Trust Center lists ISO 27001:2022, SOC 2 Type II, PCI, GDPR, CSA, HECVAT, and HIPAA badges, and says certifications may apply to specific products.checked 4 Oct 2026
- Two-way SMS
- Yeschecked 24 Sep 2026
- Use cases
- Sinch describes use cases including marketing campaigns, customer updates, identity verification, and customer service.checked 4 Oct 2026
- Who it is for
- Sinch describes the SMS API for businesses using SMS for alerts, codes, commands, campaigns, updates, verification, and service messages.checked 4 Oct 2026
The company
- Company history
- Sinch’s About page says its founders set out in 2008 to transform customer communications.checked 4 Oct 2026
- Founded
- 2008checked 28 Sep 2026
- Headquarters
- Stockholm, Swedenchecked 28 Sep 2026
Money
- Free plan
- Nochecked 24 Sep 2026
- Toll-free numbers
- Yeschecked 24 Sep 2026
- Trial
- Sinch says new Sinch Build accounts receive trial credit, a default project, and API keys without requiring a credit card.checked 4 Oct 2026
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