"Starting 9:00 AM EST on 2/4/2014 all of your domains will be protected via our WebLock Program. In order to make changes to your Domain Name's configuration settings you must be pre-registered as a Certified User. [...] To establish Certified Users and pre-register authorized phone numbers and email addresses please call 1-888-642-0265 Monday to Friday between 8:00AM and 5:00PM EST. Please make sure to establish Certified Users with authorized phone numbers and email addresses before launch date. To establish Certified Users and pre-register authorized phone numbers and email addresses please call 1-888-642-0265 Monday to Friday between 8:00AM and 5:00PM EST. Please make sure to establish Certified Users with authorized phone numbers and email addresses before launch date. [...] To help recapture the costs of maintaining this extra level of security for your account, your credit card will be billed $1,850 for the first year of service on the date your program goes live. After that you will be billed $1,350 on every subsequent year from that date. If you wish to opt out of this program you may do so by calling us at 1-888-642-0265."
That makes it very clear. As of 2/4/2014 his domains WILL be protected, any changes will require him to be registed as a Certified User, that will require a call, and he better make sure to register as a Certified User before the launch date (which is given; 2/4/2014). And after this launch date he will be billed $1,850, and he has to call in order to opt out of the program. There is no ambiguity in any of this. He WILL be protected, he WILL need to be a certified user, they WILL charge his card, and he WILL need to opt out if he chooses.
The only ambiguous phrase is this, right at the end:
"We strongly encourage you to take advantage of this security program and register Certified Users before the program launch date. "
Now, you could interpret that to mean "if you don't register Certified Users you will not be protected". But you could also interpret that to mean "if you don't register Certified Users you'll be fucked, because your domain will be protected anyhow but you can't make changes". So it's ambigious. But the proceeding paragraphs explicitly state that you will be protected anyhow but can't make changes, so I think that, in contet, it clearly means that the program is opt-out, not opt-in.
More charitably, it's possible NetSol managed to copy-paste a few paragraphs from the "thanks for opting in, your protections start {{ date }}" email into their "have you considered opting in, it's awesome" email; the general rambling and incoherent nature of the email would certainly support this. But while we can guess as to what insanity led them to send the email, and if they actually meant it, I maintain that the plain meaning of the email is jut what it said: That protection WILL start on 2/4/2014, unless he calls to stop it.