Build business messaging into your Microsoft solutions - fast.

Celerity helps you embed messaging directly into apps and workflows. Our products, BulkSMS (SMS) and Kero (RCS), offer powerful APIs to send and receive messages, track delivery, trigger webhooks, and automate messaging with Microsoft Power Automate.

BulkSMS delivers reliable, global SMS with support for Unicode and long messages. Kero unlocks RCS - rich, branded, interactive messaging that drives higher engagement without requiring an app download.

Built for fast integration, easy resale, and scale, with clear docs and code samples.

Visit celerity.chat | bulksms.com (SMS) | kero.chat (RCS) for more