i have an issue where i am unable to send an email of that type (having single quote in email id) using cfmail.
How is this manifesting? What do you mean you are "unable" to send [etc]?
Forget about cfmail for a second. Use your mail client, Outlook, Notes, whatever, to send something to an email address containing an apostrophe. Or, go to hotmail, gmail, or something similar and try to create one.
what i mean by i am unable to send is
the email id which i have given below
i saw these restrictions in Adobe CFMAIL Reference. So do we have satisfy these?
Rob Smith <firstname.lastname@example.org>
"Rob Smith" <email@example.com>
firstname.lastname@example.org (Rob Smith)
No you can't. If an email address contains a ' in its local part it is not a valid email address unless the entire local part is quoted. This is not a ColdFusion rule, this is a rule from RFC 2822 which standardises email behaviour. So email@example.com is invalid, but "avi'kanchiraju"@example.com is valid. (Not sure if it is supported by CF, but that is easy to test.)