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A rich hosted Exchange environment for every user without having to manage a server.
Mandrill is a scalable and affordable email infrastructure service, with all the marketing-friendly analytics tools you've come to expect
nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Typekit is the easiest way to use real fonts on the web. It's a subscription-based service for linking to high-quality Open Type fonts from some of the worlds best type foundries.