Here is the problem, if I enable nodebb-plugin-rss, the users will be bombarded with multiple notifications. I'd like to set a default of "not watching" to the rss dir, and the user may change that settings afterwards.
@sampo2910 of None is the only option that works, then that's probably the only one your email provider supports. It should be fine as long as you don't need your emails to be perfectly secure.
