  E-journal preservation systems have to ingest millions of articles each year.
Ingest, especially of the "long tail" of journals from small publishers, is the
largest element of their cost. Cost is the major reason that archives contain
less than half the content they should. Automation is essential to minimize
these costs. This paper examines the potential for automation beyond the status
quo based on the API provided by CrossRef, ANSI/NISO Z39.99 ResourceSync, and
the provision of typed links in publishers' HTTP response headers. These
changes would not merely assist e-journal preservation and other cross-venue
scholarly applications, but would help remedy the gap that research has
revealed between DOIs' potential and actual benefits.
