Leeloo.ai is a platform for complex automation of the client's path from the first click to regular sales. It allows you to automate key business processes of customer acquisition, support, sales, using chatbots in messengers and artificial intelligence
Telegram is a free messenger for PCs and smartphones. It allows an unlimited exchange of messages and media files. Telegram works as a cloud-based system and supports mass messaging and group chats.
Slack is a corporate messenger that lets active dialogs be closely integrated with other applications.