  Internet Message Access Protocol (IMAP) clients are a common feature in
several programming languages. Despite having some packages for electronic
messages retrieval, the R language, until recently, lacked a broader solution,
capable of coping with different IMAP servers and providing a wide spectrum of
features. mRpostman covers most of the IMAP 4rev1 functionalities by
implementing tools for message searching, selective fetching of message
attributes, mailbox management, attachment extraction, and several other IMAP
features that can be executed in virtually any mail provider. By doing so, it
enables users to perform data analysis based on e-mail content. The goal of
this article is to showcase the toolkit provided with the mRpostman package, to
describe its key features and provide some application examples.
