First, phone access is harder to fake than an email address. But, burner phones are only ten bucks at a convenience store. Still, synchronous human contact seals the deal for a lot of us. Given, requires some form of payment. So, contact number to talk to sellers for classifieds. Given, good netiquette to respond by telephone. As a result, don’t trust someone who won’t allow you to call them.
Phone numbers give a person responding to an online classified the ability to contact someone about a post directly. A phone call can be hard to ignore. Those who post Classifieds with phone numbers are more accessible than those with email only.
The accessibility a phone number provides gives a seller more credibility. An email message is asynchronous communication. The recipient may not respond immediately or at all.
When an online classified advertisement has an email address only it means they are screening responses to the ad. The person posting does not trust the responses. The lack of trust can be for legitimate reasons. An email address without a phone number in an online classified advertisement is a red flag.
Contact Number Netiquette
Respond to posts with phone numbers because the advertiser is accessible.