CodeTwo Exchange Rules is ranked 3rd in Email Signature Software while Zarafa is ranked 16th in Email Applications. CodeTwo Exchange Rules is rated 9.0, while Zarafa is rated 8.0. The top reviewer of CodeTwo Exchange Rules writes "Great features that enabled us to reduce hardware at our on-prem sites". On the other hand, the top reviewer of Zarafa writes "Our customers are able to use this groupware solution to connect to Active Directory and OpenLDAP, although Postgres support would be an improvement". CodeTwo Exchange Rules is most compared with Microsoft Exchange Online and Exclaimer Signature Manager, whereas Zarafa is most compared with Zimbra Collaboration and Open-Xchange.
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