How do you know if you really won a sweepstakes? First, verify the source of the notification; legitimate wins typically come from official channels, not unsolicited emails or messages. Check for official confirmation, such as a phone call or a letter from the sponsoring company. Additionally, be cautious of requests for personal information or fees, as these can be red flags. If you’re still unsure, research the sweepstakes online to see if others have reported similar experiences. Ultimately, knowing how do you know if you really won a sweepstakes involves careful scrutiny and verification of the information you receive.