Why are you asking for my email? How do I change my email address?
You need to register a working email address in your profile. Please use a real address that you check. We will not spam you, and we will not give out your address. (Only site admins can see it; they can also see the email address you used when you signed up.) We use your profile email address to send password reset emails, reply to messages you send through the Contact Form, or contact you about specific site matters.
By default, your address is hidden from everyone else and not shown on your user-facing profile page. Only if you set your preferences to show it, will your email address show up in your profile -- and even then, it only shows to registered logged-in users.
Being contactable by other users can sometimes be advantageous. Many members use a semi-disposable address for MetaFilter only so that people can contact them. You can use MeFiMail for contacting other users and being contacted if you don't want to have a user-facing email address.
MeFi Mail is a private messaging system for MetaFilter users and allows contact with users who may not have an email address in their profile. It is enabled by default but can be turned off in the profile editing area. Members can opt to have these messages sent directly to their profile email address.
There is a little envelope on the header bar of each page of MetaFilter, next to your username. The little envelope will turn orange when new messages are received. To check your Mefi Mail, click the envelope; it will take you to your Mefi Mail inbox.
To send someone Mefi Mail, go to their profile page by clicking their username. Members that have this option enabled will have a "send MeFi Mail" option visible on their profile page underneath their username that can be used to contact them.
Users can also opt to block MeFi Mail. Users who have blocked MeFi Mail can not send or receive MeFiMail and their profile page will say "MeFi Mail Disabled". To block Mefi Mail on a per-user basis, scroll to the bottom of a Mefi Mail from that user and click "Block this sender." If you have blocked a user and want to unblock them, you can do this from your contacts page at the bottom where it says "Manage blocked senders".
HTML cannot be used in MeFi Mail messages but URLs on a line by themselves will turn into hyperlinks. Banned or time-outed users cannot use or access MeFiMail.