Emailcenter have
conducted research into what the top UK B2C email domains
are. This article records the findings and suggests techniques
to consider when emailing recipients at these ISP’s.
Why
is this important?
Each ISP has its own set of rules for filtering emails and
many of the main web mail providers such as Hotmail find
it difficult to display many HTML emails correctly.
By knowing what
the make up of your list is you can identify the which domains
to focus your efforts into ensuring you beat spam filters
and also making sure your email is displayed correctly.
The
Results
There are five
main ISP’s that dominate consumer email lists. These
make up on average 48% of a list.
The breakdown
of the average number of each of these in a consumer list
is detailed in the graph below:

The research
also pointed out some interesting trends. Firstly bounce
rates at the web-mail clients such as Hotmail and Yahoo
tend to be considerably less than the likes of Wanadoo and
BT Internet whom also provide consumers with their internet
connection. This can presumably be explained by consumers
whom change their ISP have to change their email address.
In addition some of these higher bounce rates could also
be attributed to the ISP changing the domain in their users
email address.
Tips
for each ISP
AOL