You can extract an email address from a Craigslist personals ad to directly contact the person who posted it. Craigslist hides the individual email address for this type of ad behind what is known as a "CAPTCHA" sequence, which requires you to type a series of characters -- usually letters -- that appear in an image before you are able to proceed. The email address you extract may be the poster's actual address or an "anonymized" Craigslist email that forwards messages to the poster.
Navigate to the Craigslist personals ad from which you want to extract an email address. Click the "Reply To This Post" button.
Input the characters you see in the image that displays, keeping in mind that they are not case sensitive. Click "Submit" to proceed. If you enter the characters incorrectly, CAPTCHA allows you to keep trying until you get it right.
Right click the address and select "Copy Email Address" from the pop-up menu. Create a new message in the email client of your choice and press "Ctrl+V" simultaneously to paste the address in the "To:" field.