Bungie has stated on so many occasions, DO NOT use the postmaster for storage or you risk losing items. This is avoidable if you just used an app like Dim or Ishtar where you can drag items from your postmaster to your character and then dismantle them. Bungie will not replace these items. [url=https://help.bungie.net/hc/en-us/articles/360048717732-Deleted-Item-and-Character-Policy]Bungie Policy[/url]

Why does the Postmaster need more space...? You’re not supposed to be using the Postmaster for storage to begin with.

21 is more than enough space, the problem is all the worthless blues. AUTO DISMANTLE BLUES option, Bungie, please