Originally Posted by Zorak

The only email you will get is if the RUC clears AND the ticket is reissued. Reissue does not happen immediately, and if the agent does not do whatever they do to cause a manual reissue to occur, it goes into a queue and could take weeks depending how far out the flight is.

If you are merely waitlisted then there is no email confirmation expected from that.

EDIT: on further reflection, I forgot that you often get an updated reservation email when waitlisted, but I don't think that always 100% happens.