exactstate.com is the pro version of basicstate.com for users with more demanding test requirements.
Tests for HTTP, HTTPS, SMTP, POP3, IMAP, FTP, TELNET, SSH, PING or TCP connections at monitoring intervals down to 1 minute.
Simultaneous testing from multiple test server network locations.
Email blacklist monitoring for your mail server, domain name or ip address blocks(/24).
Be alerted immediately by email or sms text message whenever your site has problems. Be first to find out about network outages, server outages, server overload, dns configuration, or ssl certificate problems.
You can add as many sites and users as you like. You can tailor default, backup and emergency alert schedules to your preferences.
A current history of your site's performance is also sent to you automatically by email daily. It's a quick and easy way to track all your sites in one place. see uptime alert and report samples here ... You also have access to a graphical view like the uptime performance graph samples shown here ...
As a subscriber, you can choose to receive additional server alerts for the external ecommerce services which might affect the speed, availability or performance of your web site.