Direct Messages are important part of Twitter. If you’re a Twitter power user, you should know that deleting DMs is not the simplest thing to do. Twitter is available on all mobile platforms as well, but it’s not easier on most of them.
However, things will change in the near future. Recently, the folks at Twitter announced the company is working on an update which will roll out in the next few weeks, and will make it easier to delete and access direct messages across web and mobile apps.