Tagmetrics

July 28, 2009

Delivery Metrics

By laura
3 Min read
4 comments
28July

Last week ReturnPath published a study that shows 20% of permission based email fails to be delivered to the inbox. For this study, ReturnPath looked at the mail sent by their mailbox monitor customers and counted the number of deliveries to the inbox, the number of deliveries to the bulk folder and the number of emails that were not delivered. At US ISPs 21% of the permission based emails sent...

May 4, 2009

The Weekend Effect

By laura
2 Min read
Add comment
04May

Sending mail only Monday through Friday can cause reputation and delivery problems at some ISPs, even when senders are doing everything right. This “weekend effect” is a consequence of how ISPs measure reputation over time. Most ISPs calculating complaint rate use a simple calculation. They measure how many “this is spam” clicks a source IP generates in a 24 hour period...

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