Sinch SMS API

6.3easy start · #24 of 76
in Transactional SMS Software

Free to practise onnot on record
Free trialyes
Well documentedyes
Runs where you worknot on record

Runs on api.

Sinch SMS API is ranked #24 of 76 in transactional SMS software on The Geeks Club, made by Sinch SMS API (Stockholm, Sweden). It runs on API. There is no free plan. A free trial is offered.

Sinch SMS API plans and pricing

All plans

Pay as you go Not published Usage-based SMS pricing · Destination-specific rates sinch.com · 24 Sept 2026

Sinch SMS API (pay-as-you-go; 10DLC) $0.01 once Per inbound message; carrier fees apply. 10DLC · carrier fees apply sinch.com · 4 Oct 2026

Sinch SMS API (pay-as-you-go; short code) $0.01 once Per inbound message; carrier fees apply. Short code · carrier fees apply sinch.com · 4 Oct 2026

Compared on transactional SMS software

Two-way SMS: Yes
Inbound webhooks: Yes
MMS support: Yes
Short code support: Yes
Toll-free numbers: Yes
SDK languages: Node.js, Java, .NET, Python

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The record

Free plan: No
Purpose: Sinch SMS API lets applications send and receive SMS messages worldwide.
Carrier network: Sinch says its SMS service has more than 600 direct carrier connections.
Delivery: The service advertises direct-to-carrier routing, SLA-backed uptime, and prioritized routing for OTP delivery.
Fraud prevention: Built-in AI monitors traffic and detects or blocks smishing, bot traffic, and artificially inflated traffic in real time.
Messaging features: Listed features include two-way SMS, delivery reports, traffic controls, scheduled messages, and a testing sandbox.
Use cases: Sinch describes use cases including marketing campaigns, customer updates, identity verification, and customer service.
Trial: Sinch says new Sinch Build accounts receive trial credit, a default project, and API keys without requiring a credit card.
Integrations: Sinch’s integrations page lists platforms including Adobe Campaign, HubSpot, Shopify, Salesforce, SAP, and Zapier.
Compliance: The SMS API page states that Sinch SMS API is GDPR compliant and ISO 27001 certified.
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.
Support: Sinch’s product page directs prospective customers to contact sales or use developer documentation to get started.
Who it is for: Sinch describes the SMS API for businesses using SMS for alerts, codes, commands, campaigns, updates, verification, and service messages.
Company history: Sinch’s About page says its founders set out in 2008 to transform customer communications.

Where it ranks on The Geeks Club

Best Transactional SMS Software in 2026#24 of 76

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Sources

sinch.com/messaging/sms-api/· checked 24 Sept 2026
sinch.com/integrations/· checked 4 Oct 2026
trust.sinch.com· checked 4 Oct 2026
sinch.com/about-us/· checked 4 Oct 2026
sinch.com/pricing/· checked 24 Sept 2026
sinch.com/pricing/sms/· checked 4 Oct 2026