Channels

Recipients

Recipients come from comma-separated env lists (not per-request address books):

Variable	Used by
`NOTIFICATION_PHONES`	`SMS`, `WHATSAPP`
`NOTIFICATION_EMAILS`	`EMAIL`
`NOTIFICATION_TELEGRAM_CHAT_IDS`	`TELEGRAM`

A single POST /notifications with multiple channels fans out to every configured recipient for each requested channel.

Variable	Channel
`TG_BOT_TOKEN`	Telegram
`RESEND_API_KEY`, `NOTIFICATION_FROM_EMAIL`	Email
`PINDO_API_URL`, `PINDO_TOKEN`, `PINDO_SENDER_ID`	SMS
`WHATSAPP_ACCESS_TOKEN`, `WHATSAPP_PHONE_NUMBER_ID`, `WHATSAPP_API_VERSION`, `WHATSAPP_VERIFY_TOKEN`, `WHATSAPP_APP_SECRET`	WhatsApp

Full defaults: Configuration. WhatsApp also exposes verification/status webhooks — see API Reference.