Twitter's much-speculated subscription is reportedly called Twitter Blue. We first heard about the company's plans for a paid subscription service last year. Jane Manchun Wong, a well-known app researcher, has now shared some important details about the service and what it would be offering to subscribers.

Two of the major Twitter Blue features under development are said to be Undo Tweets and Collections. The first one will simply allow users to unsend a tweet within a stipulated time frame. This will likely work the same way as Gmail's undo email feature works. However, an argument can be made about the usefulness of the feature considering anyone can already delete a tweet whenever they want.

The second feature i.e. Collections is all about creating collections of bookmarks. Each of these collections will work as individual folders for different categories. It will offer a convenient way to organize all the tweets that you like so that can you revisit them anytime much faster.

Wong says Twitter is working on adding more benefits to the subscription service. It is said that the service will actually have multiple tiers for different prices. It will start off at $2.99 per month and will offer more features with a higher-priced tier. This is not the first time we are hearing about the company looking for ways to generate revenue. It has already announced Super Follow which is another subscription service but it will be offered by account holders. This will likely be offered initially to users with a high follower account.