SMS Marketing Guides

Get from zero to sending your first SMS via API in under 10 minutes. Authentication, endpoints, request format, and error handling covered.

Best practices for building, segmenting, and maintaining contact lists. Handling opt-outs, suppression lists, and keeping your database clean.

Learn how GSM-7 and UCS-2 encoding affect your SMS character limits, segment costs, and what characters trigger UCS-2 mode automatically.

Understand how long messages are split into segments, how segments affect billing, and how to optimise your messages to reduce costs.

A practical guide to the SMPP v3.4 protocol — binds, PDUs, throughput limits, error codes, and how to build reliable SMPP integrations.

Set up delivery receipt webhooks to receive real-time status updates for every message. Payload format, security, retry logic, and examples.

How international SMS routing works, the difference between tier-1 and grey routes, country-specific restrictions, and how we ensure global delivery.

Everything you need to know about SMS Sender IDs — alphanumeric IDs, numeric long codes, short codes, registration requirements, and country restrictions.

A practical compliance guide for UK SMS marketing — GDPR consent requirements, PECR rules, opt-out obligations, and ICO registration.

Proven tactics to maximise delivery rates, open rates, and conversions. Message timing, personalisation, opt-in strategies, and A/B testing.

Complete reference for SMS delivery report status codes, error codes, and what each status means for your messages and retry logic.

Implement SMS OTP and 2FA in your application. Code generation, expiry, rate limiting, and security best practices for SMS-based verification.