Two SMS providers, compared on price, features and ratings, so you can pick fast.
Updated October 2026
THE VERDICT
Azure SMS wins on price. Sinch wins on developer experience and channel coverage.
Azure SMS starts at $0.0075 versus Sinch's $0.0078. Pick based on volume and team, and the scorecard below breaks down where each one leads.
Winner cells are tinted, green where Azure SMS leads, violet where Sinch does.
FAQ
Azure SMS starts at $0.0075 versus Sinch's $0.0078. Compare your expected monthly volume against the per-message rates above.
US 10DLC and toll-free SMS both cost $0.0075 per message segment to send or receive, before extras. On top of that, a per-carrier surcharge applies (for example $0.0020/segment for AT&T outbound or $0.0030/segment for Verizon and T-Mobile), plus a $1/mo 10DLC number lease (or $2/mo for toll-free), and one-time and monthly 10DLC brand and campaign registration fees. There's no separate ACS platform fee: it's pure usage-based billing through your Azure subscription.
Sinch provides official SMS API SDKs for Python, Java, Node.js, and .NET (C#), maintained on its public GitHub organization. These libraries handle authentication, retries, and serialization. There is no dedicated official PHP SDK, only a basic tutorial using the REST API directly, and the underlying REST API can be used from any language.
Yes. Many teams route different message types through different providers or fail over between them. Courier lets you send through both behind a single API and switch providers without changing your code.
Why not both?
Use both behind one API.
Route Azure SMS, Sinch, or both, and switch providers without changing your code. Courier sits in front of every channel.
Pricing, plans and feature availability as of October 2026 and may change. Ratings are aggregated from public review platforms.