Whilst mail servers could be configured to silently discard email, the SMTP RFC strongly discourages this Except if senders are identified to get fraudulent or unwanted. For all other mail, the RFC recommends returning undeliverable mail by having an error code. Overfeeding your visitors – lousy. Overloading your recipients https://itsupport67777.amoblog.com/what-does-email-campaign-mean-48522716