Google may roll out a new verification process for its Local Service Ads program. Supposedly this verification process will reduce spam within the LSA program and lead to legit businesses having an ...

Keeping your email lists healthy and up-to-date requires the removal of invalid email addresses. These contacts often contain typos, cannot receive incoming emails, and have a high probability of ...

These are usually not returned if an email address does not exist at all. Return codes starting with 5 – i.e. codes between 500 and 599, are reserved for permanent errors, which imply that the email ...