WhatsApp (connection via QR code) - you can write first, allows you to create a bot, simple connection process, the main channel for sending service notifications for Altegio, all dialogs are free, allows mass mailing (it is recommended to use only on old WhatsApp numbers with rich message history and to send a small number of messages per day, about 150-300).
WhatsApp Business API (WABA) - WhatsApp mass mailings without the risk of blocking the number, allows you to create buttons in messages, 1000 free dialogs per month, you can write first.
Telegram Bot - it is possible to customize the main menu of the bot, allows you to set up service notifications on Altegio records for bot subscribers and set up mass mailings for them. You cannot initialize communication from your side, only after a client would subscribe to the bot.
Telegram account - it is possible to initialize communication from your side and customize the main menu of the bot. Uses your Telegram account to send messages.
Instagram - you can customize the main menu of the bot, you can only reply to incoming messages from clients.
Facebook Messenger - it is possible to customize the main menu of the bot, mainly used for manual communication with clients by replying to incoming messages.