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Infobip SMS API

infobip.com

Free plan WebAPI
Visit infobip.com
Spec score 8.1 #30 of 76 in Transactional SMS Software

What it is

Infobip SMS API lets businesses integrate SMS sending and receiving into existing systems. Its features include bulk sends, inbound messages, scheduling, delivery reports, flash SMS, binary content, and National Language Identifier. The API also lists two-way SMS, short codes, toll-free numbers, and MMS support. Infobip says the service reaches over 190 countries through more than 800 direct connections. Requests can use HTTP Basic authentication, API keys, IBSSO tokens, or OAuth 2.0. TLS 1.2 is supported, and Infobip recommends API key or token authorization for HTTP traffic. Client libraries are listed for Node.js, Python, Java, Go, PHP, C#, and Ruby. Integrations include ActiveCampaign, Adobe Commerce, HubSpot, Salesforce, Shopify, WooCommerce, Zapier, and Zoho. The API is presented for developers and use cases such as authentication, support updates, and marketing. A free trial is available, but trial messages can only be sent to the account’s verified phone number. Pay-as-you-go charges apply to messages sent; rates depend on destination country, network, sender type, use case, and applicable discounts. No fixed message price is listed.

Spec sheet

Purpose
The SMS API lets businesses integrate sending and receiving SMS into existing systems.Read 4 Oct 2026 · infobip.com
Intended users
The SMS API is presented for developers integrating SMS into existing systems and for use cases including authentication, support updates, and marketing.Read 4 Oct 2026 · infobip.com
Integrations
Infobip lists integrations including ActiveCampaign, Adobe Commerce, HubSpot, Salesforce, Shopify, WooCommerce, Zapier, and Zoho.Read 4 Oct 2026 · infobip.com
Security
Infobip says it supports TLS 1.2 and recommends API key or token authorization for HTTP traffic.Read 4 Oct 2026 · infobip.com
Compliance
Infobip documentation covers SMS compliance requirements including opt-in and opt-out, sender registration, and local rules such as DLT, IYS, and 10DLC.Read 4 Oct 2026 · infobip.com
Support
Infobip’s SMS documentation links to a support center for troubleshooting guides and frequently asked questions.Read 4 Oct 2026 · infobip.com
Headquarters
United KingdomRead 23 Sep 2026 · infobip.com
Founded
2006Read 23 Sep 2026 · infobip.com
Authentication
Infobip API requests support HTTP Basic authentication, API keys, IBSSO tokens, and OAuth 2.0.Read 4 Oct 2026 · infobip.com
Company history
Infobip’s company page lists its official establishment under the Infobip name in 2006.Read 4 Oct 2026 · infobip.com
Developer tools
Infobip provides client libraries including PHP, Java, Python, C#, and other languages.Read 4 Oct 2026 · infobip.com
Global reach
Infobip says its SMS API reaches over 190 countries through more than 800 direct connections.Read 4 Oct 2026 · infobip.com
Inbound webhooks
YesRead 24 Sep 2026 · infobip.com
Messaging features
The API supports bulk sending, inbound messages, scheduling, delivery reports, flash SMS, binary content, and National Language Identifier.Read 4 Oct 2026 · infobip.com
SDK languages
Node.js,Python,Java,Go,PHP,C#,RubyRead 24 Sep 2026 · infobip.com
Short code support
YesRead 24 Sep 2026 · infobip.com
Toll-free numbers
YesRead 24 Sep 2026 · infobip.com
Trial limitation
During the free trial, messages can only be sent to the account's verified phone number.Read 4 Oct 2026 · infobip.com
Two-way SMS
YesRead 24 Sep 2026 · infobip.com
Zapier support
The Zapier integration can trigger on a new SMS and perform an action to send an SMS.Read 4 Oct 2026 · infobip.com

Plans and prices

Pay-as-you-go Price not published Pay only for messages used · Country- and network-dependent rates · Volume discounts available for large campaigns Read 24 Sep 2026 · infobip.com
SMS API pay-as-you-go Free Pay only for messages sent; rates vary by destination country, network, sender type, use case, and applicable discounts. Message charges vary; free trial account can send only to a verified phone number Read 4 Oct 2026 · infobip.com

Every Infobip SMS API plan and price →

Strong points and limits

Strong points

  • Supports bulk sending and inbound SMS.
  • Includes scheduling and delivery reports.
  • Offers several authentication methods.
  • Client libraries cover seven listed languages.
  • Integrations include Salesforce, Shopify, and Zapier.

Limits

  • Trial messages can only reach a verified phone number.
  • Message rates vary by destination and other factors.
  • No fixed message price is listed.

Who it suits

It suits developers adding two-way SMS to existing systems, including authentication, support updates, or marketing workflows. Teams should account for destination-dependent message rates and the verified-number limit during the free trial.

Verdict

Infobip SMS API provides sending, receiving, and delivery features alongside multiple authentication and integration options. The trial restriction and variable message charges are important considerations before integrating it.

Where Specifiction places it

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