Potential buyers or sellers who see your ad will not be able to contact you if your e-mail software uses a Spam Filter or Autoresponder.
How to Set a Spam-Filter
If you are using a spam-filter, please add firstname.lastname@example.org to your safe / trusted list, or to your Address Book.
Please do not use Autoresponder
Autoresponder cannot tell the difference between important e-mail and junk. We suggest that you use an e-mail address without this feature.