We performed a comparison between iMail Server and Zimbra Collaboration based on real PeerSpot user reviews.
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iMail Server is ranked 17th in Email Applications while Zimbra Collaboration is ranked 4th in Email Applications with 27 reviews. iMail Server is rated 0.0, while Zimbra Collaboration is rated 8.0. On the other hand, the top reviewer of Zimbra Collaboration writes "Provides good email capability; lacking in security and performance". iMail Server is most compared with , whereas Zimbra Collaboration is most compared with Microsoft Exchange, Open-Xchange, IceWarp, Google Workspace and KerioConnect.
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