The biggest day of the year in 2006 for US retail e-mail marketers was the day after Christmas, according to Email Experience Council data cited in Marketing Charts. More than 53% of retailers tracked in the study sent email on December 26.
The day is favored for capturing added sales from returns as well as gift card and e-gift card sales as quickly as possible.
Other popular days with email marketers included Cyber Monday (the Monday after Thanksgiving) and days related to holidays they preceded, such as Mother's Day, Father's Day, President's Day, Valentine's Day, Easter and Tax Day.
None of the 20 most popular e-mail days fell in July, August, September or October.