(This will be a copy of my opinion at Facebook, si...

(This will be a copy of my opinion at Facebook, since I think that 101domain doesnt deserves the bad reputation that other people say, I have 2 sites with them and you can check all my info if you want, this is my ppoint of view as a customer)

At the time I have your services, havent found any problems yet as opposed of other post says, mainly I think that many problems starts with not knowing really, how the proceadures are done.
I had little bit of a problem on transferimng my ccTLD domain but the support team fixed quiet fast, it wasnt 101domain fault since some ccTLD resgistrars require some human intervention like in my case a .ec domain, there is an admin that needs the aprove the transfer at NICec
Beside of that, I think that there are many features missing that doesnt makes 101domain the first option on shared hosting service like:
- Doesnt support DKIM outgoing mail signing, a standard mechanism for not forgering youre address, with no support on this, because on thing is placing the public key on the DNS records and the other thing is placing the private key on the server for signing the outgoing emails (currently 101domain servers cant do this, many admins forgets about where to place the private key ending on a faulty DKIM policy), with that being said, then you cant also implement fully a DMARC policy, so your last defence mechanism is SPF that its quiet old and has prooven that its really faulty.
- No SSH access to the server, many other providers do gives you this option even if its under a jailshell access for security reasons, so no option if you update youre site trhough rsync.
- Site transfer option: The 101domain hosting services relay on Parallels Plesk control panel, if youre site was on the other provider that had cPanel (this was my case), it will be a little bit of a hard work to make a transfer, since the plugin of cPanel compatibility to Plesk is unabled, mainly you have to recreate your entire site again!
- No DNSSEC option for .ec domain, to be fair this maybe a fault of NICec
- When configuring an email client like Outlook gives you an error of not being trustworthy the signign authority of the TLS certificate (no SSL option on smtp server by the way).
- SpamAssasin is the only SPAM filter option and its quiet restricted its configuration, you cant attach it to your SpamCop account to make the reports, to be fair, this option isnt also allowed in many hosting providers, dont know why. By the way it would be mutch better if 101domain do partners with services like SpamExperts, you can setup realy easily this service with 101domain server (I have done already the setup) and this also would benefit on bandwith and security to 101domain, because SpamExperts are the ones that in first place recives all the domain emails and once filtered of SPAM and infected ones, they are passed to 101domain server.
- Last but not least, no IPv6 support for todays internet.
- Also forgot to mention solution as a partner for 101domain would be CloudFlare, its very easythe setup (I have done this setup to), this also would benefit the final client and 101domain on bandwith, pages loads would be mutch more eficient and with a lot more on security.