Email Blacklist

Hi. I want to chat with few of chosen IDs and block the rest to save my time. I want to ensure if I block them to not be able to chat with me but they still be able to send e-mail to me. Currently I just added the chat blocked IDs . Can they send me e-mail? If this will make them as e-mail block too,will their e-mails go to spam folder or they will not be received even?

I want that person may not be able to mail, if I block, i.e, the person should get mail delivery failure notification if he or she tries to mail me.
Is it possible?
Only polite answers plz
I want to block a person in particular, unofficial

Can you block certain e-mail addresses if you do not wish to receive a e-mail from the person?
I want to be sure that I will never get an e-mail from this address. So once I have blocked them is it guaranteed I will not get an e-mail from them at all?

I don’t want to block all of my incoming e-mail; but when a specific person’s e-mail gets in, is there a way to send an automated answer only to that person, and let all the other incoming e-mails as normal?

We just started emailing each other fun stuff, and things. One day, instead of deleating her message, I hit the spam button on Yahoo mail. How can I un-block her email address? I know there’s a list of blocked addresses in a folder of mine, but how can I open that, and unblock her? It’s personal, because I really like this woman friend, and she likes me too. Please help me. I miss her emails.
It doesn’t go into the bulk folder when you hit spam. It might go into the trash. I found it says in my blocked addresses list, her name isn’t in there. Weird.
Also, on the upper right of Yahoo Mail, there’s an options thing to click. It leads to a page which lists blocked addresses. But, her email address isn’t listed, though I KNOW I block hers by mistake.

i keep getting annoyed w/ sites emailing me and theres no button that you can press to get off the email list. is there something on YAHOO mail that can block email addresses?

I have heard of being able to send an e-mail and block the receiver from lookingup your IP address.

I have marked FanBox and Virtual Pet as SPAM for 2 weeks now, but every day I get mail from them. How can I block them or get rid of them?

I want to block incoming e-mails from my ex.How do I do this?

I use to be able to block porn that was sent to me…(I don’t want it) and other mail I have not subscribed for…what happened to it?