Twitter is increasing the price of its subscription service, Twitter Blue, from $2.99 to $4.99 per month. Subscribers get features like "undo send" that gives you the ability to fix a tweet in a certain time window, customized icons and navigation bar, the ability to change your profile picture to an NFT, ad-free articles within the Twitter Blue Publisher network, and access to top articles shared by your network. Twitter informed subscribers about this price change via email over the last few days.