How to Add a User to the Contact List?
To add someone to your contact list, reply to a message that contains the person's user ID with the text /addcontact. To send a message to your contacts, tap on the Contacts👤 option. Then, from the list that appears, click on the command next to the name of the person you want to message, and afterward, send your message. To delete your contact list, send the command /deleteContact to your bot.