ULSEmailMarketing.com Email Marketing and Bulk Email Software Specialists.

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Bulk Email Bounce Management

Automated Hard and Soft bounce processing will maintain the quality of your mailing lists and delivery rates. Extensive statistics and detailed records are kept for each campaign sent, for each mailing list. All of this is done on the server side so you don't have to spend half your time wading through bounced email messages.

What is an email bounce?

A bounce occurs when we attempt to deliver a message to server which for one reason or another declines the message and returns it, or the server could not even be contacted. The reasons for non-acceptance of a message are many and varied. A non-existent email account is a very common reason for a message to bounce. Another reason would be email account has reached it's permitted capacity and is temporarily rejecting any incoming email. Our email software will categorizes bounces as either Hard or Soft.

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What is a Hard bounce?

If our email server believes the recipient server is permanently rejecting messages, based on either the return error code, or return descriptive message, it will place the recipient's email address in the Hard Bounce category. Examples of strings we are searching for in permanent failures include, but are not limited to :

  • closed due to inactivity
  • unknown recipient
  • invalid recipient
  • user unknown
  • not our customer
  • user not known
  • unknown user
  • addressee unknown
  • no such user
  • has been disabled
  • disabled or discontinued
  • recipient name is not recognized
  • mailbox not found
  • user doesn't have a
  • mail server permanently rejected
  • no such recipient
  • no longer accepts mail
  • recipient unknown
  • recipient rejected
  • does not exist
  • user is no longer
When your campaign commences, our software will begin dispatching messages to the email addresses in the selected mailing lis(s). When we believe a hard bounce has been received, our bulk email software will automatically remove the offending email address from the mailing list(s) your message was being delivered to. A record of all hard bounces are then stored in your Local Filter which you can later review and, if desired, export.

What is a Soft bounce?

If our email server believes the recipient server is temporarily rejecting messages, based on either the return error code, or return descriptive message, it will place the recipient's email address in the Soft Bounce category. Examples of strings we are searching for in temporary failures include, but are not limited to :

  • mailbox unavailable
  • couldn't find a mail exchanger
  • host not found
  • unrouteable mail domain
  • find any host named
  • host unknown
  • quota reached
  • quota exceeded
  • mailbox full
  • name service error
  • lookup of host failed
  • service not known
  • access denied
When your campaign commences, our software will begin dispatching messages to the email addresses in the selected mailing lis(s). When we believe a soft bounce has been received, our bulk email software will keep track of the number of failures each particular email address has bounced. A record of all soft bounces are also stored in your Local Filter which you can later review and, if desired, export. Once an email address has softly bounced a certain number of times, it will be upgraded from a soft to a hard bounce, and our bulk email software will automatically remove the offending email address from the mailing list(s) your message was being delivered to.

Why do we manage bounces?

The quality of a mailing database has an impact on both our server's reputation and the value of your mailing list. If we continually attempt to send mail to non-existent accounts both our server's resources, and the receiving server's resources are placed under unnecessary strain. You can imagine how many invalid requests a server such as Yahoo's mail server my receive in any given day. By the same token, if you mailing lists weren't properly maintained, the number of active email accounts would gradually decrease.

To keep our mail machine running optimally, and by maintaining a high acceptance rate from mail servers, our reputation remains in tact and deliverability remains high. This means, more mail in inboxes, and less mail in junk folders.




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