These accounts will not be deleted right after 11 December and it will happen over many months - not just on a single day.
After Twitter confirmed the inactive account (those that haven't tweeted in more than six months) cleanup on Tuesday, a number of users noted that this would also have the effect of erasing the content of accounts whose owners have passed away.
The firm said the free-up will not reduce its user base, as it defines users by the amount of accounts that are actively carrying out functions on a day-to-day basis.
The BBC reports that Twitter is making the move because anyone who fails to sign into their account is unable to agree to the latest policies.
As part of our commitment to serve the public conversation, were working to clean up inactive accounts to present more accurate, credible information people can trust across Twitter.
The social network has said that it plans to remove any Twitter accounts which have not logged into the site in the last six months and will offer their unique usernames for other people to claim them.
While there will no doubt be several caveats to the policy, a slew of account handles that appear to be inactive could soon become available, including @DonaldTrump, @MitchMcConnell, @mikepompeo, @WilburRoss, @BetsyDeVos, @Bourdain and @carrieffisher. Some users are also concerned about potentially inactive accounts using their registered trademarks. After that, Twitter will start nuking unused accounts, focusing first on accounts outside the US. The company hasn't disclosed when it will make the freed usernames available to active users. However, the company told Engadget that it's considering ways to memorialize accounts of the dead, which is what Facebook does.
Twitter isn't the only company which has taken action against dormant users.
The Twitter logo is seen on a phone in this photo illustration in Washington, DC, on July 10, 2019.