Frequently Asked Questions

What is a Sender ID?

A Sender ID is a name or number that appears as the sender of an SMS. It helps recipients identify who sent the message and is subject to registration and verification in many countries. Senders can be alphanumeric (like your company name) or numeric (like a 10-digit long code), and they play a key role in brand recognition, trust, and engagement.

Why do I need to register my Sender IDs?

Sender ID registration is mandatory in many countries to prevent spoofing, phishing, and spam. Unregistered Sender IDs may be blocked, replaced with warning headers such as Likely SCAM, or incur additional fees. Registration ensures that only legitimate businesses can use specific Sender IDs, guaranteeing deliverability and protecting both your brand and your customers.

How long does Sender ID registration typically take?

Sender ID registration times vary significantly by country and carrier. Some operators complete registration within several days, whilst others - particularly in regulated markets - may take a month or more! At Senderz, we optimise the process to minimise delays and provide real-time updates on registration status. What may have taken weeks, can now be accomplished in days with Senderz!

What documents are typically needed for registration?

Documentation requirements differ by country, but typically include business registration certificates, proof of brand ownership, sample messages, sender ID usage justification, and an authorisation letter. Senderz helps create and format these documents correctly for each operator, market, and regulator.

Can I use the same Sender ID in multiple countries?

Yes, you can use the same Sender ID across multiple countries, but you'll need to register it separately in each country according to their specific requirements. Our AI-powered platform simplifies this process by managing multiple registrations from a single dashboard.

What is Senderz?

Senderz is a centralised AI-powered platform that automates Sender ID registration and management across global operators, markets and regulators. It simplifies the submission process, reduces compliance errors, and provides real-time visibility into registration status.

How soon can I start using the platform?

We're currently onboarding early access partners. Register your interest, and our team will reach out with details on our next available slots, and guide you through the process step-by-step. Depending on your registration requirements and target countries, you could be up and running within hours! For complex markets, timelines may vary, but our intelligent platform will register your Sender IDs faster than humanly possible.

Which countries and operators do you support?

Senderz is rapidly expanding coverage. We currently support many of the most regulated countries and are constantly adding new operators and markets. Contact us for the most up-to-date coverage list or to request prioritisation for specific destinations.

Do you have an API?

Yes, Senderz provides a robust REST API that allows you to integrate Sender ID registration and management capabilities directly into your systems and workflows. It supports bulk submissions, status tracking, and document uploads - perfect for Operators, CPaaS providers, aggregators, and enterprise platforms. Our API documentation provides detailed guidance on implementation.