Is it possible to write a blogpost and have it published later? Also, if it could expire at a certain time would be awesome. Sometimes we publish company news that are not relevant after a while.
That's possible with our Enterprise News Bundle.
You can find it by itself as an add-on in the Atlassian Marketplace: https://marketplace.atlassian.com/plugins/net.seibertmedia.confluence.enterprise-news-bundle/server/overview
Or as a complete intranet solution called Linchpin: htthttps://www.linchpin-intranet.com/
These give you some more info about the Enterprise News Bundle: