On the iPhone and iPad you may encounter links for telephone number, date/times, and addresses. You can disable/hide this by adding the following in the head tags of your message.
<meta content="telephone=no" name="format-detection">
<style type="text/css">.appleLinksWhite a {color: #ffffff !important; text-decoration: underline;}
.appleLinksBlack a {color: #000000 !important; text-decoration: none;}
</style>
Then around each blue link in your message add the following class class="appleLinksBlack"
Here is an example
<span class="appleLinksBlack">May 16, 2017</span>