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 ...

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 ...

WhatsApp is now allowing users to verify their accounts using an email address in addition to a phone number. This new option is particularly useful for times when cellular coverage is poor or ...

Businesses rely on email leads for market expansion and revenue growth. Emails provide a channel to drip content like newsletters and promos to turn prospects into paying customers. The best email ...