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Best time to send marketing email

Pages and pages have been written about the best time to send email. Marketers spend significant amounts of energy discussing and researching the best time of the day and the best day of the week to send email. I have long thought that these discussions do not put enough attention on individual end users and how the recipients interact with email.
Researchers recently developed a model for email user behaviour that splits email users into two classes “e-mailaholics” that send, and presumably read, email all the time and “day labourers” that send, and presumably read, email during standard business hours. There is very little transition between groups, 75% of users stayed in the same usage group over the 2 years of the study.
What does this mean for senders? Senders need to know know how their recipients use email and which user group recipients are. By analyzing clicks and opens, senders can classify recipients and use that data to send mail that is more relevant and better targeted.
h/t arXiv blog at Technology Review

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Who is responsible for data integrity

Yesterday, Ken Magill wrote about his experience with the Obama campaign’s open and unconfirmed marketing list. Ken, to see just how open the Obama subscription form was, subscribed using a valid email address but the name of Stupid Poopypants. As expected, mail to Ken from the Obama campaign was addressed to Stupid.
eROI uses this as an example of people who ruin their ROI by filling fake data into forms and ends their post by addressing Ken as follows:

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e360 sues a vendor

As if suing themselves out of business by going after Comcast and Spamhaus weren’t enough, e360 is now suing Choicepoint for breach of contract and CAN SPAM violations. As usual, Mickey has all the documents (complaint and answer) up at SpamSuite.
This may actually be an interesting case. On the surface it is a contractual dispute. Choicepoint sold e360 40,000,000 data records containing contact information including email addresses, snail mail addresses and phone numbers. Some of the records were marked “I” meaning they could be used for email. Some of the records were marked “O” meaning they could not be used for email.
Despite these terms being reasonably well defined in the contract, e360 sent email to addresses in records marked “O.” Some of those addresses resulted in e360 being sued by recipients. During the course of the suit, e360 contacted Choicepoint and asked for indemnification. Choicepoint refused for a number of reasons, including the fact that Choicepoint told e360 the addresses were not for mailing. In response, e360 filed suit.
The interesting and relevant part of this case is the CAN SPAM violation that e360 alleges.

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