I have tried working with Servage.net. It is a miserable failure... because THEY are a miserable failure. NO ONE should EVER use them.
The web pages were so slow and cron and php would crawl, so I resorted for a while just using them for IMAP and FTP.
And then I backed up my office computers to FTP, on an account ONLY ever used by me... it took a lot of time. And then some Servage sysadmin went through my files and randomly deleted some (not all) and then sent me a message that I was using too much disk space (I was paying for and credited with bonuses that gave me 750GB, and I used 400GB for backups) AND they were going to delete anything they thought was copyrighted material.
They are friggin amateurs.
There are also wild differences in their different IMAP/POP servers. For example, srv15 will NOT work with iPhones, but srv9 and srv11 will.
There is also no SSL for email, they use vulnerable and antiquated ports to send and receive. They might as well just forward copies of all your emails to the myriad of Eastern European hackers that sift through their servers every day.
They also suffer from routine and inexplicable service outages. If you can access your email via webmail when client access fails - which happens to be about 4 hours of every week - and contact management, all they say is that "there is not problem so you must be doing something wrong".
Their customer service is a combination of keeping their head in the sand and outright lying to their clients.
There is no phone number to call, and their customer service email system (actually a web interface, which does no good when their own site goes down along with yours, which is often) is just full of emoticons and NEVER provides a real answer. They either deny there is a problem or give a

like that is going to help your business and communications.
Furthermore, there is a glaring security problem with their client login. To wit, if you:
Log in the the CP as Domain A, then go to a different web page or even close the browser and then log into the CP as Domain B, you are taken to the the CP for Domain A even after Domain B's login being accepted. ONLY if you log out and quit the browser will you be limited to the CP for Domain A. This happens on all my Macs, running Safari OR Firefox 2.
I wrote into Servage about this very problem months ago... and they told me that it was impossible. Yet I still do it. I jacked into a client's website and created an paralell FTP account for myself to access his private files just to demonstrate. And Servage still denied that I did it.
In short, Servage should be run out of this business. They don't deserve at all to even be in the industry.
I quit my account AND I am posting this review/tip in as many places as I possibly can.