Giveaway by buttons, by comments, among all subscribers, the contest "subscribe a friend". Checking subscriptions. Statistics and uploading results to Excel.
icliniq - Get medical second opinion on #slack from real doctors
Karmabot for Telegram - Free bot for tracking performance in chats
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
HiStaff - Make your staff and workspace happy
First Opinion - Text a doctor for free
iCliniq on Telegram - telegram bot that will get answers from real doctors