Here is the answer to "How do Snapchat Streaks Work?" A streak starts only when two people send a snap (not a chat) to each other every day continuously for more than 3 days. Once both of them have done this, a fire emoji will appear next to that contact's name, along with the number of days the Streak has lasted. If you can maintain the streak for a long time, Snapchat will reward you with special emojis.