Github user joewitt commented on the issue:
https://github.com/apache/nifi/pull/483
For subthasmtp it looks like all that would be needed is to add to our
nifi-assembly/NOTICE an entry such as
(ASLv2) subethasmtp
The following NOTICE information applies:
Copyright (C) 2006-2007 SubEthaMail.org
This is assuming you've already verified its transitive dependencies are
also accounted for. If we already have all of those in our dependency then
nothing more needed.
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