E-mail delivery rates rose to 89% during the fourth quarter, up from 87% in the third quarter, according to Lyris EmailAdvisor. In the U.S., the delivery rates increased to 92% while European delivery rates rose to 86%.
“Even though e-mail best practices range from country to country, European providers are improving deliverability more quickly, blocking 3% less e-mail in Q4 2005 compared to Q3 2005, as opposed to the U.S. providers which improved gross deliverability only 1% in Q4 2005,” said Dave Dabbah, director of marketing, Lyris Technologies Inc.
The top 10 U.S. domains by inbox delivery rates were peoplepc.com, 99.51%; earthlink.net, 99.35%; yahoo.com, 96.81%; gmail.com, 97.59%; usa.net, 97.98%; knology.net, 97.4%; juno.com, 97.33%; socall.rr.com, 96.68%; cs.com, 96.48%; and mac.com, 95.77%.
Lyris also found that users with addresses with one of the top 10 U.S. providers were 21% more likely to receive their opt-in e-mail than those who used one of the bottom ten providers-97.5% versus 76.4%.
Inappropriate spam filtering rose to 2.6% in the fourth quarter from 1.2% in the third quarter, due to an increase in false-positive spam filtering by a single European Union provider, Lyris said.
Lyris, provider of e-mail marketing services, monitored 60,928 opt-in e-mail marketing messages sent between Oct. 1 and Dec. 31 from 49 different businesses and non-profit organizations to multiple accounts at 40 ISP and e-mail service provider domains in the U.S. and Europe.