Dive Summary:

• The volume of email being sent out by retailers increased by 19% last year, according to a report on Responsys' Retail Email Blog.
• December saw the largest volume of sends, with individual brands pushing out an average of 25 emails each, up from 22 a year earlier.
• The report also showed that 93% of major online retailers sent emails out to subscribers on Cyber Monday in 2012.

From the article:

With all the talk about social media marketing and content creation for the web, discussions surrounding email marketing can seem few and far between, but the marketing channel grew substantially in 2012, especially in the retail industry. The amount of email sent by retailers in 2012 jumped by 19 percent, according to Responsys’ Retail Email Blog, showing that this sect of content marketing continues to gain traction. So many messages are circulating through cyberspace that brands must develop email marketing campaigns that give brands a competitive edge. ...