A pre-print is any version of an article prior to peer review and publication, usually the version submitted to a journal. Pre-prints cover initial and successive drafts of articles, working papers, and draft conference papers.
The term "pre-print" can also be used to describe a finished article that has been reviewed, amended, and accepted for publication but separate from the version that is typeset or formatted by the publisher. This distinction is common among the publishers.
In general, publishers allow for publishing preprints. You can double check your publishing agreement to make sure it's the same in your situation or find the list of acceptable journals here.
A post-print is any version of an article approved by peer review and submitted for printing. The article must include all peer review changes. In terms of appearance this might not be the same as the published article if it's missing publisher's typesetting and formatting.
The majority of journals already permit authors to archive their post-prints. According to SHERPA/RoMEO over 70% of publishers give blanket permission for post-print archiving. Many others will do so on request, and nearly all will accommodate a mandatory open access policy from the funder.
There are some notable exceptions:
If you transfer copyright to a publisher, then making your article open on Authorea might require the publisher's permission (If you retained the right to authorize OA, then you can don't have to worry about it)
Some publishers qualify their permission, place limits on where you can share your article, and add new restrictions such as fees or embargo periods
A publisher version is the version of the article as seen on the publisher's website. It is professionally typeset and linked to library databases.
Some journals give authors permission to share the post-print, but not the publisher's version. You might need to include the final publication information inside the post-print, and link to the publisher's version using the DOI.
Published on: 12 / 16 / 2017