I have a problem with the Mailchimp Opt-in confirmation email in Outlook.
I just want to center the Subscribe button at the end of the Newsletter and it should have a red background with white text.
It´s not possible to add a style on the a-Tag.
See the Code below:
<a class="button" href="foo"><span>SUBSCRIBE</span></a>
Add the following rules to your button. It will make sure to make the button inline-block level element and the margin-left and right auto will bring the button to center.
display: inline-block; margin-left: auto; margin-right: auto;