Global Update - May 8th, 2021 Added /mail remove <#> command to remove a specific mail based on its index. (1-based indexing) Added /global command to talk and listen in global chat. Added /local command to talk and listen in local chat. The /chat command now displays your current listening and talking status. Fixed a ChatReaction bug that could cause data loss. Fixed a bug that allowed players to place boats on protected islands. Fixed that coop members were still able to change islands settings. ... and a few more minor bug fixes.
Drogo assumes the /mail remove # was added as people may have wanted to keep particular mail. Would it be easier to /mail pin # to designate the mail to keep. This way people can still just /mail clear, knowing pinned mail will stay, rather than having to remove specific mail every time.
Drogo has no use for this change but sees a better implementation for it. So not worth Drogos time to make a post.