Not Joining After Accepting Offer Letter

hi ,
i am Himanshu, i had sign offer letter through email (Not on Paper) of one company,but due to the some personal reason it is not possible for me join company. Today company told me that they will put case on me in court .can they do that .following are the format and lines...
Dear Himanshu,
From Company
Hi Himanshu,
We are confirming your joining in our company on 19 November 2012 Monday at 10:00 am for the profile of SEO with the discussed salary ……… per Month. Revert me with you acceptance of joining on 19 November 2012 with all required documents on the time of joining
From My Side:
Hi,
First of all thanks for your this offer, I am accepting your this offer and i will join your company on 19th November. Please let me know what kind of document I will require to submit on the joining time.
From Company
1.) Documents (copies of educational certificates along with Originals).
2.) 10th (mark sheet/passing Certificate- migration and mark sheet in case of CBSE).
3.)

Dear Mr. Webanup (Himanshu),
Legal proceedings will not happen by sending out an email stating that you join on a purticular date. [You haven't joined the Organization yet]. Albeit, even if you would have joined your document with them will not prove appeal. When even someone joins the company he is aid to be in probation which will not effect the same.
BOND's are also said to be illegal in INDIA. Therefore, you've no raison d'être to worry. It is just a parsimonious game played by such employer's for saving their sources. Relax and look forward to newer opportunities which you think could fasten together.
Good Luck..!

Don't worry, it's just some pathetic guy trying to bully you.
I don't think your contract says that once you sign the offer letter, you'd be penalized if you don't join. Remember, you are not a bonded laborer so resist any attempts which treat you as such.