It is assumed that you have already found an ad, with the author you want to contact.
On the screen above, you will find a link "Contact the advertiser", click on it.
You will be given one to three opportunities to contact the author of the advertisement: either via Email (the first tab), or via built-in mail site (the second tab), or via phone (the third tab), if the author left it.
The first method does not require registration unless the author of the ad has given permission to do so. Otherwise, only a logged-in may associate with him. The ad author will receive your message on his email address. This will allow him in turn to contact you.
The second way to contact the ad author is through the postal service of the site. It is clear that both parties should log on to the website using this method. Email addresses of subscribers in this case will be hidden from each other. Here you have the possibility to add an image (photo or picture) to the text.
The user decides which method is best for him.