To answer a classified advertisement on Craigslist, open the specific advertisement, click the Reply button at the top-left corner of the page, choose the preferred webmail service, compose the message, and then click Send. The response address from Craigslist and the title of the message appear on a new window.
Some advertisers on Craigslist ask the reader to reply via telephone calls or by clicking a specific link provided in that particular advertisement, which redirects the reader to a new window or contact form. The telephone numbers of the advertiser appear at the top or bottom of the advertisement.
To find out the exact method for contacting the advertiser, click the Reply button, then view the contact method provided under Preferred Contact Method. The advertiser chooses the preferred contact method when creating the advertisement on Craigslist.
When you click the Reply button, the title of the advertisement becomes the title of the email message by default. You can delete it and add a new title that suits the context of the message you want to send to the advertiser. If the response address does not appear in the message box, click Reply, copy the address under Reply By Email, and paste it into the text box for the email address of the recipient.