Be very careful with any unsolicited announcement advertising an opportunity to publish or present!
While these following resources are not unsolicited announcements or ones widely posted on the internet, you may still have to evaluate the postings. Predatory journals and publishers are finding ways of infiltrating legitimate resources.
Pivot - ProQuest [Database available through the Alvin Sherman Library]
Listservs moderated by NSU schools and departments are an important way of finding publishing and presenting opportunities. If you are not sure how to subscribe please contact your department.