The future of business messaging

Smart. Scalable. Reliable.

Celerity helps you connect with your customers through reliable, scalable, and secure messaging solutions – across SMS, RBM, and more. Whether you’re sending updates, driving engagement, or building trust, our platforms give you the tools, data, and flexibility to do it better, faster, and with purpose.

BulkSMS.com

Trusted, scalable SMS messaging for your business

Built for enterprise-grade communication, BulkSMS enables your business to send high-volume, time-sensitive messages reliably – at scale and with full control. Whether you’re sending OTPs, alerts, or transactional updates, our robust infrastructure ensures consistent delivery across global networks.

KERO.CHAT

Rich messaging for teams that need to deliver at scale

Managing multiple messaging channels can be complex, slow, and disconnected. Kero simplifies this by bringing rich, branded communication into one secure platform. 

Team Culture

Our core values

At Celerity, we have three values that convey how we work and grow together.

One

Integrity

We are accountable, honest, and fair in all our interactions.

Two

Tenacity

We persevere through difficulty, aware that, with hard work, better times lie ahead.

Three

Openness

We are open to a diversity of ideas and opinions and are transparent in our actions.

Latest Blog Posts

Sharing our insights and experience in the world of modern business messaging.

9 December 2025

SMS retains enduring relevance in an era of real-time messaging

Businesses and consumers alike are spoilt for choice when it comes to communication channels. WhatsApp, RCS, and other over-the-top (OTT) platforms dominate daily interactions,...
26 August 2025

BulkSMS powers ahead under new parent brand, Celerity – expanding trusted messaging infrastructure across Africa and beyond

BulkSMS, one of South Africa’s most established and trusted business messaging platforms, enters an exciting new chapter as part of Celerity, a newly launched...
19 July 2025

How to Send SMSes directly from your Website

If you'd like to send an SMS directly from your website, you'll need to use our SMS API from BulkSMS.com....

Speak with an expert, not a salesperson.

Not sure how the Celerity range of products can help with your business communications? Book a call with one of our consultants today!

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