I see your advertisement which are flashing on the right side of the mail box is something which frustrates me. Every then and now the ads are changing and flashing up which is limiting my focus on reading the mails. I don't know the marketing strategy of yours. But mailbox should be less distractive and more engaging within its feature. You should put the notepad option handy within that box instead opening it in new tab. And handle the advertisement in a way which distract less.