The best replacement for exchange 2007 is 2003.

The best alternatives to exchange 2007 are rated as following:
★★★★★  2003
★★★  exchange imap
★★  exchange 2010
★★  exchange 2003
★  domino 8

Your alternative for exchange 2007 is not listed? Suggest!
Speaking about exchange 2007, one probably shouldn't forget about isa.

Other search terms related to exchange 2007 and their ratings are:
★★★★★ isa
★★★★ outlook 2013
★★★ exchange 2013
★★★ outlook 2010
★★ office 2013
★★ outlook 2011
★ bes
★ multiple domains
entourage
isa 2006
pop3
You have in mind a companion for exchange 2007 and it is not yet here? Propose!



Google Trends

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exchange 2007
2003
exchange imap