WebTitan

Very good blocking of spam messages.
Works with any e-mail server setup.
Provides extra layer of protection.

Difficult to use their web interface, as a lot of the parts don't make sense. No simple method to setup multiple users quickly and easily. But once setup, it's pretty much set it and forget it. Also, you lose 99% of control of incoming messages at your e-mail server. Which may or may not be a bad thing.

We replaces an onsite Barracuda webfilter 410 with the WebTitan service and did not miss a beat.

What's not to like. No hardware to maintain, simple setup, more than adequate reporting, similar feature list to competitors.

It does work fairly well at keeping out spam, and the daily summary emails of what is in the quarantine makes it manageable.

The interface feels horribly dated and has not improved at all since we started using it a couple years ago. It reminds me of early cpanel iterations in terms of UI.

Also, the inability to manage what file extensions are blocked is a let down (be it add more, or let ones through that we need).

I love the ability to utilize the remote agent to allow computers to stay under our company's web-filter policy while working remotely.

The only thing that we dislike so far is the fact that it can sometimes take hours for the policy changes to take effect.

Implementation is easy, adding sites to the white/blacklist is simple. Creating policies is overall pretty smooth, have had to contact support a couple of times.

The DNS Proxy is another annoying black box VM to have to "maintain".