We have heard about Hillary Clinton's emails ever since this circus of an election started. I quote the SNL skit, "People are tired of hearing about your damn emails." It has not really hurt her yet but it could very well come back to bite her in the ass. If she owns up to it then it might not affect her as much.
The recent finding about Hillary Clinton's use of a private e-mail account and server while she served as Secretary of State do not hurt her chances in the general election. The issue is stemming from political enemies, and those that support her on the issues will continue to do so.
Hillary Clinton's chances in the general election will not be hurt by recent e-mail revelations in the slightest. She is a member of the elite political class in the United States and her e-mail misdeeds, no matter how many laws she broke or how much classified information she may have sent over her non-secure email server, will be completely overlooked by her faithful followers in the media and the general public.
E-mail revelations do not hurt Clinton's chances in the general election because she has a willing and able elite media to give her all the cover she needs. If this scandal has not taken her down by now there is no reason why it would take her down at any future time.