I just received this from the IRS regarding 90 Minds request for non-profit status. I don't think it's anything other than a ""we received it"" type mailing. Be happy to forward it to @JeffSchwenk if he wants to keep it in his files.
https://www.evernote.com/shard/s1/sh/b3f18a37-66c7-4c0d-90cd-3a6547411a36/9469187b8bc8a5711417b7df3884970e