This is a trick I personally use and I am sure, you too would give it a try after reading the whole article. Though I am using this trick for quite long time, but just now it hit my mind to let the world know about this trick.
Well, you may have received some mails wherein the mail id on ‘To’ field is that of the sender or some one else but not yours and you may be wondering how come you received the mail when the recipient id is not yours. So this is a quite simple trick that many of us use while sending group email. This is usually done so that other’s identity may not be disclosed. So let me come to the point and disclose the procedure to send undisclosed identity mails. 
As usual compose an Email, on the ‘To’ field either enter your own mail id or the one you can disclose to all recipients. Now enter all those ids that you want not to disclose on the ‘BCC’ field. That’s it! You are done 
By this, all will receive the mail but the addresses mentioned on the ‘BCC’ field will not be visible to anyone except to the person entered on the ‘To’ field.
I have tried it with Gmail, and guess it would surely work with others too. So, the next time while sending greetings to a group of people, do not forget to use this trick.
DONT call this a trick. . this is the basic function of bcc field
Not sure why you felt that this was a ‘tricky’ trick. As you’ve used above - Blind Carbon Copy is designed specifically for this
http://en.wikipedia.org/wiki/Blind_Carbon_Copy
And to BCC some one, you don’t need a single email in the ‘To’ too.
What’s so great about this trick? This is something which almost anyone who uses email knows. You actually wrote a post on this !!
Well in gmail you can directly enter the addresses in the BCC field without filling anything in the To field like what we do in outlook express, but in yahoo you have to do enter an email address in To field
@ All above:
This may not be a trick but a useful thing every one should know. I agree that this is the basic function of ‘BCC’ but still many of them does not know about it. I felt writing about it when I received a comment wherein I was asked how to hide mail id..
About not entering any id on “TO” field…
As said by Sooraj it works with Gmail but not with outlook express..
So lets see for how many this post would be useful
Yes, Deepak you are right , In india people even don’t know how to send mail. I taught this things to hundreds of my ENGINEERING friends. I noticed thousands of people making the mistake while sending festive greetings to all contacts. So posting about the function of “BCC” is cool. Grate job Dude.
@Devi Mahapatra - Yup! You are Right. Sometimes we Bloggers only write about Complex Techie Stuff and forget to write about some basics which many actually don’t know of. I feel Deepak Post on this “Simple trick” helped me to Realise what Actually I was forgetting to write about in my Blog.. Thanks Deepak for the Idea.
This is a MUST for anyone to use BCC, my mail id gets leaked to spams due to my ENGINEERING friends who don’t know all these tech stuffs.
http://bccplease.com/
@ All Commentators
Guys, you all are internet users and it is must for you to know all these, but we have friends who don’t even know what is CC, BCC is a far thing.
I agree, this is not a great post, but we should make it popular among our friends group who don’t know all these
may be old trick
bcc is basic
no traces should b there of sender nor of site from which it iis sent… let yahoo domain key detect it is fake …. but it should look like real 
if u have time,, can u pls make a detailed article about e mail spoofing??? which hides e mail address in another meaning
I agree Ram, These are the Basic Funda’s !!
@ Abhishek & Robin:
So, may be this post is not for geeks like you 
I agree this is a very old trick or feature, but as Pavan pointed you all are Internet geeks and know all these stuffs..
But Devi says there are even people who don’t know the use of ‘CC’ field..
@ Adi:
I will rethink about writing a post on mail spoofing..
I don’t wanna write that ‘cos it may put some one in trouble..
@ Adi,
I don’t think you can hide every information in that way, even if you configure your system as smtp server, then also you cannot make it look like genuine one. Anyway, you can easily prank recipients in case they are newbies. All details are revealed if you check the header of received mail.
One such script is available here: http://www.whoisabhi.com/php-fake-mail/
Even the script is also available, if you are interested, tweak it! One thing is for sure, ITS BAD
Thanks for putting my link Pavan
Nice trick.
@Jai -
Thanks buddy
@Nikhil Pai -
Well not everyone know about this and I guess if you read other comments it will be clear to you!
Thanks — useful reminder — sure, it’s basic — but it was also helpful as I was having a premature senior moment and couldn’t remember how I hid the group’s addresses last time. Not something I do very often as I like to keep things open and direct.
@susan
Glad to know that it helped u…
quick n cool trick…