Accessily is a guest post desk: you list your site, receive article proposals, and can charge for the placement.
List your site and receive guest post proposals
You list the site. Other people send the article proposal.
4 destinations
PubWhizz is a guest post desk: you list your site, receive article proposals, and can charge for the placement.
Storly is a guest post desk: you list your site, receive article proposals, and can charge for the placement.
SearchEye is a guest post desk: you list your site, receive article proposals, and can charge for the placement.
How a guest post desk differs from submitting an article
On a desk you are the publisher: you register the domain and wait. Fees, review, and link attributes belong to the desk, not to Backmit.