Recycle usernames that were barely used/ created and deleted quickly
Recycle usernames that were only used for a short period before being deleted.
On a lot of websites common usernames are used up by people who sign up to try the service out and just delete the account.
Please consider making these usernames available once again.
Please do, - I noticed, when creating my account, that Protonmail has become very "Yahoo'd", ie: nary a single available username without resorting to names like RCUC48NCUOQYT84Q@protonmail.com which, to say the least, does not look very good and is likely to get your emails instantly sent to the Spam folder or blacklisted.