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 ...

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 ...

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 ...