new user, archive question

moved to a new PC, old PC had Windows Live Mail 2011 (more on that later) …server is an IMAP server,. I’m getting my mail just fine…my question is, how long does it stay in my eM Inbox on my new PC? If I want to keep that email “forever” how long to I have to archive it, before its gets deleted? 

eM Client never deletes, archives or moves anything unless you tell it to.  Your email provider, however, may have rules on this.