Looking for logging into the Flash Sign In Messenger site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Flash Sign In Messenger site. After that you can login as usual with your login credentials.
https://www.cnet.com/news/facebook-said-to-be-testing-snapchat-style-streaks-feature/
https://www.quora.com/What-does-a-yellow-flash-mean-in-Messenger
https://mashable.com/2017/11/22/facebook-messenger-streaks/
https://graziadaily.co.uk/life/real-life/facebook-messenger-symbols-mean/
https://www.facebook.com/help/community/question/?id=278271295673601
https://home.bt.com/tech-gadgets/internet/social-media/getting-started-with-facebooks-messenger-app-everything-you-need-to-know-explained-11363928250924
https://www.bgr.in/news/facebook-testing-snapchat-like-snapstreak-feature-on-messenger/
https://www.addictivetips.com/ios/what-does-the-lightning-icon-on-facebook-posts-mean/
https://emojipedia.org/high-voltage-sign/
https://beebom.com/facebook-messenger-stealing-new-feature-snapchat/
https://www.theverge.com/2017/11/23/16693862/facebook-messenger-streaks-snapchat-feature-testing
https://www.dailymail.co.uk/sciencetech/article-5111621/Facebook-trials-new-Snapchat-style-Streaks-feature.html