I used Litmus to test email compatibility of the buttons. Just checked again and you are correct. A border shows up in one of the older Android Gmail clients, b

I used Litmus to test email compatibility of the buttons. Just checked again and you are correct. A border shows up in one of the older Android Gmail clients, but it works in all the rest. Even Lotus Notes 8, Blackberry, and Outlook 2000 :) I'll update the example to fix. Thanks for pointing that out.