Telegram Channel Plugin

The Telegram channel plugin is an alert_deliver plugin that sends alert messages to Telegram chats through the Telegram Bot API. It receives Core-rendered messages and adapts them to Telegram transport.

Highlights

• Sends messages with bot token and chat id configuration.
• Supports plain, HTML, and MarkdownV2 parse modes.
• Provides disable-notification, protected-content, timeout, retry, and backoff settings.
• Separates bot-token validation from optional test-chat message delivery in health checks.

Before Registration

• Prepare a BotFather-issued bot token and target chat id.
• For groups or supergroups, confirm that the bot can send messages.
• Review escaping rules before enabling formatted parse modes.

Operations Tips

• Bot tokens are sensitive and must not appear in health or action responses.
• Core-rendered plain text is the safest default.
• Telegram does not provide a universal idempotency key; use Core delivery sessions when investigating duplicates.