Issue with MacMail email client

I have finally been able to successfully create a custom edited mailchimp template. Posts are being sent out to the correct mapped categories!!! Yae. The problem I am having is that some people are seeing a bit of code just below “Read the post here”. I’m not sure how pervasive the problem is. The post looks correct when I receive it using an Outlook mail client; however, my client who uses MacMail sees the following:
<="" style="color: #505050;font-family: Arial;font-size: 14px;line-height: 150%;text-align: left;">

I’ve contacted MailChimp but they tell me that they cannot troubleshoot a “custom” template. I assume I cannot delete this code in the template code because it is being used to display the text. Any suggestions?

http://ww.wp.xz.cn/plugins/autochimp/