Announce the prize before opening entries. Chat engagement is highest in the first 30 seconds after an announcement. Tell viewers exactly what they can win before telling them how to enter.
Keep the entry command short and memorable. Commands like !win or !gg work better than long ones like !entergiveaway. Viewers in mobile chat type faster with shorter commands.
Use the OBS overlay. Giveaways where chat can see the entry count rising in real time generate significantly more entries. Watching the counter go up gets more people to type the command.
Run giveaways at the right time. The best moment is after a peak viewership event: the end of a raid, hitting a sub goal, or finishing a difficult game segment. Concurrent viewers directly affect how many entries you get. Across 52,000+ tracked giveaways, Saturday and the early evening are the busiest windows, and the typical giveaway runs about 13 minutes.
Have a reroll plan. AFK winners are common. Set an expectation in chat that winners have 60 seconds to respond, then reroll without hesitation. StreamerGiveaway handles this in one click.