axmail (BZ #1121115) is under review. It is currently bundling fragments of mailx-5.3b which is quite old. The axmail is standalone program, not library. The axmail modified the code for it's own purposes and there is no library provided by mailx that could be used for this purpose. For more details see BZ #1121115.
This was approved, from http://meetbot.fedoraproject.org/fedora-meeting-1/2014-09-04/fpc.2014-09-04-16.02.txt:
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