Questions: 1) i don't get the 'IFTTT" listed in the black navigation bar (checked main page and sub-pages) 2) i understand how to do this with rss; however, what about items not covered by RSS. I want to create a content rule to notify me and update a Google sheet when users login. The content rule part of the rule I understand. Also, under actions I see the IFTT; However, need to connect to IFTTT rule. How would I create the IFTTT applet if I don't use RSS? (I assume user login can't be monitored by RSS - if I can, please set me straight.
There is one issue if you do decide to add that IFTTT secret key. Content rules may not work correctly at the root of your site, because the root of a Plone site is a SiteRoot object, not a Folder. I think I ran into that on Plone.org (haven't gotten back to it nor filed an issue) and @sally thought that might be my problem.
You don't say which version of Plone you're using. I just tried with 5.0.8 and collective.ifttt git clone master branch and everything works: when I add the secret key I immediately see the IFTTT button/menu in the toolbar.