Advertising mail represented 63% of all mail received by households in 2008. 84% of all advertising mail received by households is Standard Mail (83 billion pieces). The remainder consists of First-Class Mail; either stand-alone advertising (8.3 billion pieces), or secondary advertising that is sent along with other matter (8.2 billion pieces). Over time, the data show a decline in the

percentage of First-Class advertising mail.

Households received 6.4 billion pieces of Periodicals mail in 2008, slightly less than in 2007 and 2006. Nearly three-quarters of these were magazines. Newspapers are only 23% of total Periodicals, down from 35% in 1987. Contributors to the decline in newspaper volumes are lower circulation and readership levels as well as the growth of the Internet as an alternative delivery method. 

According to McCann-Erickson, says the report, American businesses spent about $271 billion in 2008 advertising their products and services, a decrease of 3.2% from 2007. Of this total advertising spending, 22% was spent on direct mail. In 2008, more than one-fifth of total advertising dollars was spent on direct mail advertising.

Direct mail was the second leading media choice of advertisers in 2008, after television. However, due to a steep economic downturn, direct mail advertising spending fell 1.0% compared to 2007. Except for the Internet and Other, all other spending media categories declined as well. 

Direct mail's share of total advertising spending has been on a strong upward trend for most of the past 17 years. Since 1999, the direct mail share has risen steadily reaching 22% in 2008. Direct mail has maintained its large ad share even with the introduction of new, fast-growing ad markets such as the Internet

Households received 100 billion pieces of advertising mail in 2008, and represented about 63% of all mail received by households in 2008. About 83% of all advertising mail received by households in 2008 were sent by Standard Mail, which equates to a total of 83.0 billion pieces. 

First-Class advertising mail accounts for 16.4 billion pieces (16.5%) of all advertising mail received by households. Of this, 8.3 billion pieces are advertising only, while the other 8.2 billion pieces are secondary advertising, such as an advertisement enclosed with a bill.

Financial institutions, the largest users of First-Class advertising, were particularly impacted by the collapse of the housing market and the sustained credit crunch that accompanied the recession. As a result, credit card and other financial types of advertising sent via Standard Mail decreased dramatically compared to other industries.

The amount of ad mail received by a household is closely tied to income and education. The relationship between advertising mail and household income is quite strong, as seen in Table 5.4. Households with less than $35,000 income receive less than half as much advertising mail as households with $100,000 or more income. And, education plays a key role in the amount of advertising mail households receive, even after accounting for the impact education has on income.

The role that education plays in advertising mail is two-fold, says the report. First, direct mail is a written type of communication, and education may play some role in its relative effectiveness compared to television or radio advertising. Second, education is not only tied to current household income, but also future household income. A college graduate who currently has a relatively low income may, in a few years, earn a much higher income. 

For every income group, advertising mail received increases as the age of the head of the household increases. In part, this is because age is correlated with other characteristics such as marriage, home ownership, and the presence of children in the household.

Households with incomes over $100,000 and with a head of household age 55 and older received the greatest number of advertising mail pieces at 27.8 pieces per week. The amount of advertising mail received increases as income, education, and household size increases. 

Ultimately, advertisers send direct mail because it works, says the report. Household members read and respond to it. Households report they intend to respond to about one in ten pieces of advertising mail. While intended responses do not always lead to actual responses, the data presented help explain why direct mail is the number one choice of advertisers in America, concludes the study.

To access the full report from USPS in PDF format, please go here.