Avoid at all costs. My email is everyday experiencing problems. Since longtime I contact them. They can not fix it. Today I didn't stop sending them tickets forth and back, losing my time. My email is still not working. We are a company just imagine what happens when your email doesn't work. You lose your clients.
They are just good at two things: Making you lose your time and money.

I received a bill from hosttech asking me to pay an upgrade of our hosting service. I took contact with the customer care, explaining I've never asked for an upgrade (I was moderating a workshop at the time where I should have asked for the upgrade). They answered me that it was me and if I want to downgrade, as I have caused them admin costs, I should pay 15€ (the same amount would had cost my upgrade, quite strange, isn't it?). So now I've to decide. Pay 15€ to downgrade my account or pay 15€ to keep a more expensive account that I don't need. They are cheap in the customer orientation as they are for their pricing. I can't recommend them.

I wanted to purchase a domain from them. Bad idea. Very bad idea. First of all they do not require any identification. That means anyone can order a domain in your name, using your email - and you'll be getting invoices!! When you follow the purchasing process, in the end they add a fee to the advertised price. The fee isn't mentioned anywhere.
Stay away from these people. They don't deserve your business.

I am really disappointed by hosttech service. Their price seem low, but when you add extra cost for SSD, the extra cost for a monthly contract and commission fee, you realize that the cost is the same as others. Plus control panel is only in german, and they don't provide support over weekend, that it is absurd for a hosting company these days. And finally, when you ask to cancel the contract made for one month, they ask you to pay another month! And this is absolutely unacceptable for a "cloud server". Other real cloud companies bill per minute, and they have no contractual terms, this is the power of a real cloud hosting. I therefore wonder whether it is really a cloud server. I regret bitterly that I have left Exoscale for hosttech. Exoscale is far away in quality of service compared to hosttech. Absolutely I do not recommend to anyone hosttech.