Notification System in Rails

Does anyone know any good notification plugin/gem for RoR.

I need to somehow store events and display them to the user if he/she is offline OR present them to 开发者_运维百科the user in a nice way if online.

This is similar to Facebook Notifications where a user is notified for new messages, comments, likes etc.

Thanks

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There is a gem called Mailboxer which has similar functionalities.

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Sounds like you may need to use Mailboxer in conjunction with PublicActivity