this appears to be the most concise answer. TM SGNL provides interop with Signal users in the field, but also includes FOIA archiving. who manages the archivin

this appears to be the most concise answer. TM SGNL provides interop with Signal users in the field, but also includes FOIA archiving. who manages the archiving service is a general government problem, and less of one for Signal or appointees. NSA should have been operating the archiving service and not a foreign country imo.