BulkSMS API

bulksms.com · checked 11 Oct 2026

#34 · SMS API services

Visit bulksms.com ↗ Alternatives BulkSMS API vs KAPSYSTEM

How it plugs in

YesPublic API

NoOpen source

NoFree tier

Signal on SMS API services5.2#34 of 35

BulkSMS API lets businesses SMS-enable websites, applications, and customer relationship management platforms.

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Runs on

Web
Windows
Mac
Linux
iOS
Android

Facts

Website: bulksms.com
Price: Not published
Free trial: Not stated
API capabilities: The API supports Unicode, long messages, multiple webhooks, and SMS attachments.
API options: BulkSMS recommends its JSON-based REST API for new integrations; its form-encoded HTTP API is deprecated, and it also offers SMPP for existing applications expecting high volumes.
Company: BulkSMS.com is a division of Celerity Systems (Pty) Ltd and says it was founded in 2000 along with its parent company.
Company history: BulkSMS.com says it was founded in 2000 along with its parent company, Celerity Systems (Pty) Ltd.
Coverage: BulkSMS says its service connects to more than 800 mobile networks worldwide.
Credit validity: Purchased credits are valid for two years from purchase.
Founded: 2000
Headquarters: Cape Town, South Africa
High-volume connectivity: BulkSMS says SMPP may suit existing applications that support it and expect to send high volumes.
Integrations: The integration directory lists options including HubSpot, Mailchimp, Salesforce, Zapier, and Zoho.
Intended customers: BulkSMS says it provides A2P messaging to large and small businesses, public benefit organisations, and individuals.
Legacy API: BulkSMS describes its form-encoded HTTP API as legacy and deprecated.

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