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Email Deliverability Is in Your Hands

by Adam Covati  |  
November 4, 2008

Deliverability is high up on the list of an email marketer's concerns. In fact, a recent report from Jupiter Research, the 2008 Email Marketing Buyer's Guide, found that deliverability is the number-one consideration for marketers when selecting an email service provider (ESP).

Unfortunately, the best ESPs on the market can do only so much to aid in getting marketing messages to the inbox. The majority of the control lies in the hands of the sender.

So what are ESPs good for? They provide the infrastructure that high-volume senders need to get through to the inbox. ESPs should also keep up with the latest in authentication methodologies and provide workflow that enforces current best-practices so senders can rest assured that every message sent is compliant with the best-practices and laws of the email marketing industry.

Although those are essential pieces of the puzzle, other contributing factors to deliverability, such as sender reputation and message relevance, are completely out of your ESP's control.

Perhaps the most important thing you can do is work on your reputation. Think of Internet service providers (ISPs) as bouncers at a private club. If they don't know you or they don't like what you've done in the past, you are going to have a hard time getting into the inbox.

Using a brand-new Internet protocol (IP) address, while seemingly a new start with a clean slate, can have negative impact on your reputation, because spammers frequently change their IP address in order to mask their actions. ISP bouncers are highly skeptical of new IP addresses. However, you can build a strong reputation fairly rapidly by sending consistently good email using the same IP address over time.

Proper list hygiene will also do you wonders for reputation. Before sending any email, ask yourself these questions:

  • How old are the email addresses on this list?
  • How long has it been since I have obtained permission from these recipients?
  • Have too many people on this list unsubscribed?
  • If recipient "A" has not opened any of the last five messages I have sent, should I remove her from my list?

You should never guess at email addresses or assume your recipients' preferences. If you're not completely confident that an address rightfully belongs on your list, for any reason, you should remove it. Why? Because poor list hygiene will likely lead to two outcomes: undeliverable email or complaints—both red flags for ISPs.

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Adam Covati is a product manager at Bronto Software ( Reach him via

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