I like that it's easy to use, you can set up rules for different types or emails so they don't end in SPAM folder if sent from wrong sources etc., all without having any technical knowledge! It is not free but with their trial period which only lasts 2 days (as far as i know) this will be just fine since there are many other alternatives out here right now too :) As mentioned above - some features aren’t available yet such things being spam filters/rules setup & more tools would really help make sure we get good value when purchasing these services rather than paying over priced fees later down stream after already losing time using them :).
Just try before buying!! We've been receiving tons less Spams lately thanks also due our own efforts by sending test messages via @smtpboxes@gmail dot com addresses instead through smptpboxes servers directly where possible thus avoiding getting blacklisted at gmail level anymore.