Do you have digital signature on your mail box ?

What is this? 

@ Mohini It is signature on all your mails, just like a vacation mail facility in your mail box

the concept emulates hand signature. When there is a document such as a letter you send to another person, you sign it. By signing it you acknowledge that you are the one sending the letter. Digital ID is similar. The content is protected by using your Digital Signature(it is a file with a password) only if you have the digital signature(issued by a recognized authority) and the password, you can sign a piece of information. Signing creates a hash of data using your signature and this is transmitted along with that information. If someone changes the file, it invalidates the signature. So if you receiving a signed document, it means that it was sent by the signee of the document. I know I talk really technical hope u understandPS: Digital Signature is not the signature that email clients allow you to add. That is just appending a few lines at the end of the email.

@Somesh, Yup you got deep in to technical. by the way your these lines "PS: Digital Signature is not the signature that email clients allow you to add. That is just appending a few lines at the end of the email." email clients nowadys allows you to add digitail signature through. used office 2010 ?

Thank you for adding to my little knowledge. @Umeshji, Someshji, Subhashji. Is there any way to get it free? I would love to add.

are its not required by normal users until you are big guy.like who deals with too much sensetve informations.. if u want u can get it for free too may be Umesh jee can tell you more on where to get

Ok Then......:)