SMS Insights & Guides
Expert advice on SMS marketing, deliverability, compliance, and growing your business with mobile messaging.
Android SMS Gateway: Send SMS from Your Phone for €0.01
Android SMS gateway — turn any phone into a personal SMS sender. €0.01 per message, your own SIM, real number shown to recipients
A2P 10DLC Explained: A Practical Guide for US Businesses
What is A2P 10DLC, who needs to register, what it costs, and how it affects SMS deliverability in the US. A plain-English guide with actionable steps.
SMS Pricing Explained: How Much Does Bulk SMS Actually Cost?
Understand how SMS pricing works — per-message vs volume tiers, country pricing differences, multi-part messages, and how to estimate your actual monthly cost.
SMS vs Push Notifications: When to Use Which
A practical comparison of SMS and push notifications — reach, delivery, opt-in requirements, cost, and which use cases each channel wins.
OTP SMS: A Developer's Guide to One-Time Password Delivery
Learn how OTP SMS works, how to implement it with SMSPM's API, and best practices for rate limiting, expiry, and retry logic in production.
How to Handle SMS Delivery Reports (DLR) in Production
Understand SMS delivery reports, how to receive them via webhook callbacks, and how to use DLR data to monitor deliverability and debug failed sends.
SMS API in Python: A Complete Tutorial
Send SMS from Python using SMSPM's REST API. Covers requests, async httpx, Django integration, OTP generation, and production error handling.
How to Send SMS with PHP: A Complete Guide
Step-by-step PHP tutorial for sending SMS via the SMSPM REST API. Covers authentication, sending single and bulk messages, error handling, and delivery callbacks.
Understanding SMS Sender IDs: Alphanumeric, Numeric, and Shortcodes
What is an SMS Sender ID, which type should you use, and which countries require pre-registration? A complete guide for businesses.
SMS vs Email Marketing: Which Works Better in 2025?
A data-driven comparison of SMS and email marketing — open rates, click rates, cost per conversion, and when to use each channel.
How to Send Bulk SMS to Multiple Countries at Once
Learn how to efficiently send bulk SMS campaigns to international audiences using SMSPM's multi-country routing and carrier-specific pricing.