Notes from the wire.
Engineering write-ups, regulatory deep-dives, industry analysis, and product notes from the team that operates BroadNet. Written in-house — no ghostwriters, no AI slop, no recycled vendor talking points.
Featured essay
The latest from the team.
WhatsApp Business App vs WhatsApp Business API vs coexistence in 2026: limits, pricing and when to switch
The WhatsApp Business App is free and made for one small team on a phone. The WhatsApp Business API (the WhatsApp Business Platform) is for automation, integrations and messaging at scale. Coexistence lets one number use both at once. This guide compares limits, 2026 pricing and number migration, and explains when to switch.
More from the journal
Recent essays.
Long-form on the things we actually wrestle with in production — regulatory regimes, protocol choices, firewall economics, channel orchestration.
SMPP window size: why your bind is slower than the rate you pay for
An operator agrees 100 messages per second, the bind delivers twelve, and everyone blames the network. Nine times out of ten the cause is a window left at its default. Here is what windowing really does on an SMPP session, and how to size it.
Holiday SMS marketing for Q4 2026: Halloween, 11.11, White Friday and year-end, a sending playbook
Q4 offers live for hours, not weeks. This playbook lists the 2026 dates from Halloween to New Year's Eve, the promotional send windows regulators publish, how to write a one-segment holiday SMS, how to keep OTPs flowing on peak days and how to measure what worked.
Black Friday Marketing Strategy: Turn Interest into Sales
Build a Black Friday marketing strategy with SMS, WhatsApp and email. Discover practical ways to generate enquiries, increase bookings and support sales.
A2P messaging regulation timeline 2024–2027: every dated change, with sources
Business messaging rules changed more between 2024 and 2026 than in the previous decade. This tracker lists every dated change we could verify, from India's link whitelisting to the UAE's move away from bank SMS OTP and WhatsApp's new pricing, with what each one means for senders and where the official text lives.
Business messaging statistics 2026: verified figures on SMS, WhatsApp, RCS and OTP
The numbers people quote about business messaging are often old, rounded or from a vendor blog. This page collects 2025–2026 figures from their primary sources, with the scope and date of each, on mobile reach, A2P SMS, WhatsApp, RCS, OTP fraud, passkeys, the Middle East and AI agents.
SMS OTP security standards 2026: what NIST, PSD2, PCI DSS and central banks actually require
Is SMS OTP still allowed? Mostly yes, under conditions. NIST classes it as restricted, PSD2 accepts it as a possession factor, PCI DSS does not name it, and India's RBI kept it. Some regulators in Asia and the Gulf moved bank logins to bound devices. Here is what each standard actually says, with the clause and the source.
SMS sending hours by country 2026: the verified quiet-hours list for marketing messages
Many countries limit when promotional SMS may reach a phone, and a message sent at the wrong hour can mean a fine or a blocked sender ID. This list covers only the markets where we found the window in an official text, with the local-time window, what it applies to and the source.
Omnichannel messaging platform in 2026: shared inbox, campaigns and AI agents across WhatsApp, SMS, RCS, Instagram and email
An omnichannel messaging platform puts every customer channel into one shared inbox, one campaign tool and one API, with bots and AI agents that hand over to people. This guide explains how each part works, the channel rules that shape it in 2026, and how to choose one.
Business email protection in 2026: how spam and phishing filtering works for Microsoft 365, Google Workspace and cPanel
Business email compromise cost victims $3.05 billion in reported losses in 2025, according to the FBI. This guide explains how an MX-level filter sits in front of Microsoft 365, Google Workspace or cPanel, what SPF, DKIM and DMARC actually prove, and what the Gmail, Yahoo and Outlook.com sender rules mean for your domain.
QR code table ordering for restaurants in 2026: how it works, what it costs and when an AI waiter helps
QR menus, tap-to-order carts and AI waiters that take orders by chat solve different problems. This owner's guide explains what each needs, works out flat fee against commission, and covers allergen rules, guest data and a rollout checklist.
URL shortener with your own domain in 2026: setup, safety, analytics and SEO
A URL shortener is a redirect service, and the domain it runs on decides how much people trust your links. This guide covers redirects and SEO, custom-domain setup, safety checks, analytics, QR codes and privacy, with every external fact linked to its primary source.
SMS OTP vs WhatsApp OTP vs Telegram OTP in 2026: cost, delivery and security compared
SMS reaches every phone, WhatsApp adds autofill buttons and is billed only when delivered, and Telegram's Gateway API charges $0.01 per delivered code. This guide compares the three channels on cost, delivery and security, and shows how to combine them with an SMS fallback.
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Most of what we write
we learned in production.
If a post made you nod, we should probably talk. Bring the use case, the volumes, the markets — we'll come back with routing, pricing, and a reference customer you can call.