For a few hours yesterday, some AOL users had problems accessing their mailboxes via the web. Laura at Word to the Wise reported these problems along with other sources, and AOL gave official confirmation via Twitter.
AOL also confirmed yesterday evening that the issues had been resolved, but mail sent early yesterday may have reflected a dip in engagement if AOL users factor heavily in your subscriber base. Hopefully you didn’t have a short response window on that A|B split test!
– BG