We performed a comparison between KerioConnect and ProtonMail based on real PeerSpot user reviews.
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KerioConnect is ranked 8th in Email Applications with 6 reviews while ProtonMail is ranked 11th in Email Applications. KerioConnect is rated 5.4, while ProtonMail is rated 0.0. The top reviewer of KerioConnect writes "Lightweight, simple, and robust; easy to maintain and doesn't require a lot of system resources to run". On the other hand, KerioConnect is most compared with Microsoft Exchange, Zimbra Collaboration, IceWarp, Microsoft Exchange Online and Google Workspace, whereas ProtonMail is most compared with Google Workspace, Microsoft Exchange Online, Microsoft Exchange, Zoho Mail and Superhuman.
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