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ISP email deliverability report

Posted by Michael Bloch in web marketing (Saturday March 4, 2006 )

Lyris Technologies recently reported an overall 2% improvement in the deliverability of marketing email messages (permission based) amongst most of the largest USA and European ISP’s.

Recipients having email addresses any of the top ten U.S. ISP’s were 21% more likely to receive opt-in email messages than those who utilized one of the ten worst-ranked providers.

The ISP’s with a permission based email delivery rate of over 99% were People PC; Earthlink and Yahoo. Gmail ranked fourth at 98.76% and USA.net was fifth at just under 98%.

Gmail, which was reported to have an extraordinarily high false-positive filtering rate in the first quarter of 2005, has reduced the incidence of fase-positive errors by 15% over the last 12 months.

Hotmail, which didn’t appear anywhere in the top 10 list for deliverability, has nearly tripled it’s previous false-positive filtering score from 5.3% in the first quarter of 2005 to 15.7% in quarter 4, 2005. “False positive” simply means that an email message is flagged as being spam when it’s actually a legitimate communication.

The information from Lyris is based on their monitoring of nearly 61,000 permission-based email marketing messages from 49 companies during the period October 1, 2005 – December 31, 2005.

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