Remove Bad Emails to Avoid Temporary Blocking
Sometimes good email marketers who practice regular email list hygiene are not able to deliver emails to a specific ISP because of a temporary email block at the ISP. In this situation the emails usually bounce with the “too many invalid email addresses” error.
In most cases this happens when email marketers engage into risky list building tactics hoping to grow their lists quickly. But legitimate email marketers should understand that list quality beats quantity in the long term.
