Knowledge for better customer communication

97-99% delivery rate, works on every mobile phone, no app installation required: SMS one-time passwords remain the most practical channel for 2FA. This guide covers implementation, security best practices, a cost comparison with WhatsApp Authentication and TOTP, and when it makes sense to switch channels.

Customer service software without a four-figure budget? Doable. But only if you know the two schools: classic email-helpdesk tools like Help Scout or Freshdesk vs. modern messaging-first platforms. Both models have tiers under €100/month. Which fits which business size, where the per-seat trap waits, and how a 3-agent SMB gets real customer service automation for under €30.

95% open rate, no app required, reaches virtually every mobile phone: SMS is the underrated channel for businesses in 2026. This guide shows when SMS pays off for notifications, 2FA, and campaigns, how to send compliantly under GDPR and TCPA, and how SMS works alongside WhatsApp.

Let AI agents read, reply, route, and summarize customer messages across WhatsApp, SMS, and Email. Human-in-the-loop built in. 20 MCP tools, official Business API.

Connect your AI coding assistant to WhatsApp in 10 minutes — with Claude Code and SendSeven MCP. Send messages, read conversations, manage contacts. Zero boilerplate, official Business API, 20 MCP tools.

The most popular WhatsApp MCP server on GitHub has 70+ open issues and gets accounts banned. Here are 5 reasons unofficial MCP breaks and how to switch to the official Business API in minutes.

Subscribers do not arrive on their own. This guide shows 7 GDPR-compliant opt-in strategies, from QR codes at the point of sale to email migration, plus 5 touchpoints most small businesses miss: subscribe buttons, the email signature, guest WiFi, the Google Business Profile and custom trigger words on the product. With a 90-day plan and a checklist to download.

Connect Claude, GPT, or Cursor to WhatsApp, SMS, and Telegram in minutes. SendSeven's MCP Server gives your AI agent the full MCP tool set across 6 messaging channels through one endpoint.

Charles is an established e-commerce specialist with dedicated customer success, deep Shopify and Shopware integration, and an enterprise focus. Three points push many businesses to look for an alternative: pricing not public (sales process required), 12 to 24-month contracts plus four-figure setup fees, and markup on Meta fees per third-party analyses. Four transparent alternatives compared: SendSeven, Trengo, Superchat, and Chatwerk. With a migration plan and an honest call on which fits better.