These databases provide email and/or RSS alerts for new articles that are written by a particular author, or that cite a particular article, or that include the keywords, compound, structure, or reaction that you have searched. You will usually have to register for a free account with the database in order to create, save, and manage your alerts.
Author alerts notify you when new articles in that database have been written by a particular person (you can track your peers).
Citation alerts notify you when new articles in that database cite an existing article in that database (you can see who is citing you).
Keyword, compound, structure/reaction alerts notify you when these things are mentioned in new articles (you can track very specific topics).
SciFinder Scholar allows "Keep Me Posted" email alerts for authors, topics, substances, structures, reactions, etc.
Reaxys allows you to create email alerts for new mentions of a structure or reaction
|Web of Science allows you to set email or RSS alerts for authors, keyword searches, and citations||The "Citation Tracker" in Scopus allows email and RSS alerts for authors, keyword searches, and citations||Google Scholar's "Citations" feature allows email alerts by author, keyword search, or citation|
|"Keep Me Posted Alert" tutorial from CAS||Instructions for "My Alerts" from Reaxys||Instructions for "My Citations" from Google|
Note: If you are off-campus and click through to access specific article results in your email or RSS alert, the fulltext articles won't be available unless you are in a proxied browser session. You can do this by adding a proxy prefix to the URL of the page you are on, or by using the NYU proxy bookmarklet link. More information on options for off-campus access is available here.