Sinch review
Sinch is an SMS API and gateway provider founded in 2008 and headquartered in Stockholm, Sweden. Its lowest US per message rate is 0.78c to send on a 10DLC or toll-free number, read September 9, 2026. Sinch gives trial credit on sign-up with no credit card, and we score it 8.00 out of 10 overall.
Alain Grossbard OAM, with Justin Grossbard Updated How we rate Reader supported, we may earn a commission Reader supported. We may earn a commission when you sign up through a link on this page, and it never changes a score. How we make money.
Sinch cost at your volume
$7.80 in message charges a month, at 0.78c (long code (10DLC))
The same rule prices Sinch on the versus pages and the price guides: the band, top-up or number type your volume reaches, from Sinch's own US rates read 9 September 2026. Number rental and carrier fees are billed on top and sit in the tables below.
Sinch scores
| Value for money | 8 | |
|---|---|---|
| Features | 9 | |
| Reliability | 7 | |
| Reputation | 6.5 | |
| Compliance | 8.5 | |
| Customer service | 9 | |
| Gateway fit | 10 |
Six criteria, equally weighted, each scored out of 10 from Sinch's own published pages (how we rate). The gateway fit score counts eight published API features and is not part of the overall score.
Sinch US rates
| As published | Price | How it compares |
|---|---|---|
| SMS Messaging / 10DLC / Send | 0.78c | Lower than 24 of 32 other providers' lowest US rates |
| SMS Messaging / Toll Free Numbers / Send | 0.78c | Lower than 24 of 32 other providers' lowest US rates |
| SMS Messaging / Short Code / Send | 0.90c | Lower than 19 of 32 other providers' lowest US rates, level with 1 |
| Long code rental | $1.00 a month per 10DLC number plus a $1.00 one time setup fee; carrier fees extra | Billed on top of message charges |
| Toll-free number rental | $2.00 a month per toll-free number plus a $2.00 one time setup fee; carrier fees extra | Billed on top of message charges |
Read from Sinch's own US pricing page on 9 September 2026. By number type. Each row is read against the lowest published US rate of every other provider we price. Source.
Sinch fees, trial and support
| What | Sinch | Source |
|---|---|---|
| 10DLC registration fees | Sinch's community pricing FAQ, which it labels indicative only, lists: $4 brand registration; $10 a month for most standard campaign types ($1.50 low volume mixed, $2 sole proprietor, $3 charity, $5 emergency, $30 agents and franchises); $41.50 standard vetting; $15 Sinch campaign review. | Read Source 1 |
| Ten dlc penalties | The same indicative community FAQ lists penalties: text enablement violation $10,000 one time; content violation $10,000 per instance; 10DLC messaging program violation $1,000; non-usage fee $250 per instance. | Read Source 1 |
| Toll-free verification | Free; Sinch charges nothing to verify a toll-free number | Read Source 1 |
| Carrier fees | Not published | Read Source 1 |
| MMS rate | MMS send and receive: $0.02 on 10DLC, $0.018 on toll-free, $0.02 on short code, per message; carrier fees extra | Read Source 1 |
| Free trial | Trial credit on sign-up with no credit card; a default project, API token and a Sinch test number are ready to send against. The credit amount is not stated. | Read Source 1 |
| Minimum plan or spend | Not published | Read Source 1 Source 2 Source 3 Source 4 |
| API and SDKs | REST SMS API plus SMPP (through sales) and the Conversation API with template management; SDKs for Node.js, Java, .NET and Python, the Sinch CLI and Functions, and an MCP server install for Cursor and VS Code | Read Source 1 Source 2 |
| Web app | Sinch Build, a developer console for messaging (SMS, MMS, RCS, WhatsApp), voice, verification, numbers, SIP trunking and fax, with 10DLC registration and SMS delivery analytics | Read Source 1 |
| Email to SMS | Not published | Read Source 1 Source 2 Source 3 Source 4 |
| Integrations named | The integrations marketplace lists 40 integrations (including HubSpot, Salesforce, Shopify, Zapier, Klaviyo, Zendesk Chat); marketing pages separately claim 500+ platform integrations | Read Source 1 Source 2 |
| Support channels | Ticket portal, email if the portal is down, phone for P1 and P2 incidents, community knowledge base and developer forum | Read Source 1 |
| Support hours | Help Desk 24/7 for faults; initial response targets P1 30 minutes, P2 1 hour, P3 24 hours, P4 48 hours; Americas office line Monday to Friday 9am to 6pm Eastern | Read Source 1 |
| SOC 2 | SOC 2 Type II completed for the Sinch Messaging API - SMS product; report offered through the Trust Center | Read Source 1 |
| ISO 27001 | Sinch's Build and SMS API pages state ISO 27001. The Trust Center's downloadable ISO 27001 certificates are for Mailgun Technologies Inc. (email), and its badge row shows only GDPR and HECVAT; no certificate scoped to the SMS product is shown. | Read Source 1 Source 2 |
| HIPAA | Sinch's Build FAQ calls the infrastructure HIPAA-eligible and its About Us page says it is HIPAA compliant; no Business Associate Agreement offer is published and the Trust Center shows no HIPAA badge | Read Source 1 Source 2 |
| GDPR | Sinch states its SMS API is GDPR compliant; GDPR is one of the two badges on its Trust Center | Read Source 1 Source 2 |
| Opt-out handling (TCPA) | Not published | Read Source 1 |
| 10DLC registration | 10DLC brand and campaign registration with The Campaign Registry is done inside the Sinch Build dashboard | Read Source 1 |
| Founded | 2008 | Read Source 1 |
| Head office | Stockholm, Sweden (Lindhagensgatan 112); Americas head office in Atlanta, Georgia (One Alliance Center, 3500 Lenox Road NE, Suite 1875) | Read Source 1 |
| Ownership | Sinch, a Swedish-headquartered group; its product list also includes Sinch Engage (the former MessageMedia), SimpleTexting, ClickSend, Mailgun and Mailjet. Listing status is not stated on the pages read. | Read Source 1 Source 2 |
| US contracting entity | Not published | Read Source 1 |
| Coverage | 600+ direct carrier connections, about 12,800 interconnections, and direct connections in 160+ countries (Sinch's figures) | Read Source 1 Source 2 |
| Uptime or SLA | Contractual: 99.95% minimum monthly availability under the Messaging SLA (v7.0, 12 January 2024), on a reasonable endeavours basis, for services ordered under an Order Form. Marketing pages separately say 99.99% uptime. | Read Source 1 Source 2 |
| Price changes | No price guarantee: Sinch may update prices daily and the price at the time of use applies | Read Source 1 |
Not published means Sinch's own pages were checked on that day and state no figure. Nothing here is carried over from the earlier version of this review.
When Sinch fits
Choose Sinch when your developers send through an SMS API at moderate volume. The 0.78c per message send rate on 10DLC (September 9, 2026) suits transactional traffic, and a 10DLC number costs $1.00 a month plus a $1.00 setup fee. You get a REST SMS API, SDKs for Node.js, Java, .NET and Python, a 24/7 Help Desk for faults, and 10DLC registration inside the Sinch Build dashboard. Sinch also supports texting services for nonprofits, with donation appeals and recurring giving prompts, read September 28, 2026.
When to look elsewhere
Look elsewhere when you need published carrier fees; Sinch does not publish them as of September 9, 2026, and they are billed on top of every rate. Short code senders pay 0.9c per message plus $500 a month for a random code or $1,000 a month for a vanity code (September 9, 2026). Its SMS API pages state ISO 27001, but the Trust Center's downloadable ISO 27001 certificates are for Mailgun (email) and no certificate scoped to the SMS product is shown (September 22, 2026).
Sinch compared
Sinch is ranked against the rest of its category: where Sinch ranks among the best SMS gateway providers in the USA.
Sinch questions
How much does Sinch SMS cost?
Sinch SMS costs 0.78c per message to send on 10DLC or toll-free numbers, and 0.9c on short codes, as read September 9, 2026. Carrier fees are extra.
Does Sinch offer a free trial?
Sinch offers a free trial with sign-up credit and no credit card, read September 22, 2026. A default project, API token and test number are ready to send against. The credit amount is not stated.
What is Sinch SMS?
Sinch SMS is an SMS API and gateway product from a Swedish provider founded in 2008. Its network covers 160+ countries with direct connections, according to Sinch figures read September 22, 2026.