danielpataki

<a href="http://madmimi.com" rel="nofollow ugc">MadMimi</a> is an email marketing tool that allows you to send emails to email lists easily. It comes with a great API which is the basis for this ACF addon.
This plugin allows you to create a MadMimi audience list selector field. You can set it to allow multiple selections and you can dictate the data that is returned.
<h4>ACF Compatibility</h4>
This ACF field type is compatible with both ACF 4 and ACF 5.
<h4>Thanks</h4>
<ul>
<li><a href="http://www.advancedcustomfields.com/" rel="nofollow ugc">Advanced Custom Fields</a> for the awesome base plugin.</li>
<li><a href="https://twitter.com/davegandy" rel="nofollow ugc">Dave Gandy</a> for the icon.</li>
</ul>

ACF: MadMimi Audience List

A field for Advanced Custom Fields which allows you to select one or more of your MadMimi audience lists

Dreb Bitanghol

This field will provide you more options and flexibility on how you would like to present an instruction or message to your client’s (or site in general) admin interface.
Features:
<ul>
<li>Support PHP.</li>
<li>Option to hide label when field is displayed.</li>
</ul>
Compatible with Advanced Custom Fields:
<ul>
<li>4 (tested up to 4.4.6)</li>
<li>5 (PRO, tested up to 5.3.7)</li>
</ul>
PS: You need <a href="https://wordpress.org/plugins/advanced-custom-fields/" rel="ugc">Advanced Custom Fields</a> installed to use this.
PPS: Even more awesome if you have <a href="http://www.advancedcustomfields.com/pro/" rel="nofollow ugc">Advanced Custom Fields PRO</a> installed.
Important note: Use this with utmost care.

ACF Enhanced Message Field

Exactly what I needed

Exactly what I needed. You could improve the plugin by making the textarea field look more like an IDE, with system fonts, syntax highlights and so on.

Perfect

Awesome!!

Adds an enhanced version of the default Message field to accept PHP and certainly no wpauto().

ACF: MadMimi Audience List vs ACF Enhanced Message Field