Alex Chernov

Use this plugin to update an ACF field(s) when Gravity Form is submitted. You also can accumulate value in a certain field (only fields of type <code>Number</code> supported at the moment).
Features:
<ul>
<li>Target a wide range of WP entities: page, post, custom post, user, term, taxonomy, widget, comment, options page, current page/post.</li>
<li>Use GF merge tags in the ACF Target field</li>
<li>Simply map ACF and GF fields in one-to-one, one-to-many or many-to-many relations</li>
<li>Use operations on ACF fields to modify currently stored values</li>
<li>Number fields support +, – and * math operations</li>
<li>All text compatible fields support + operation to join strings</li>
<li>ACF field targets support merge tags</li>
<li>Implement complex logic with conditional feeds</li>
</ul>
Any GF field compatible with string/number values should work. Tested GF fields: Single line text, Paragraph Text, Drop Down, Number, Checkboxes, Radio Buttons, Website, Email. 
Any ACF field compatible with string/number values should work. Tested ACF fields: Text, Text Area, Number, Range, Email, Url, Password, Select, Checkbox, Radio Button, Button Group, True / False
Example use cases:
<ul>
<li>Count number of submissions</li>
<li>Remember name/login/email of the last user who submitted the form</li>
<li>Make a simple page like feature</li>
<li>Save name of a last sold product</li>
</ul>

ACF Feeds for Gravity Forms

Write Gravity Forms submission fields into ACF fields. Accumulate values over time.

AcyMailing Newsletter Team

<blockquote>
<h4>Requirements</h4>
<a href="https://wordpress.org/plugins/acymailing/" rel="ugc">AcyMailing</a> 
 Advanced Custom Fields
</blockquote>
Insert custom posts from Advanced Custom Fields in your emails. 
Automatically generate monthly newsletters including the last posts.
Features :
<ul>
<li>Adds a new droppable button in the editor to insert custom posts in your emails</li>
<li>Display custom posts in the email effortlessly</li>
<li>Select the data you want to display (pictures, title, description, link, etc…)</li>
<li>Customize the way the posts are shown in the plugin settings</li>
</ul>

AcyMailing integration for Advanced Custom Fields (ACF)

Insert custom posts from Advanced Custom Fields in your emails. Automatically generate monthly newsletters including the last posts.

ACF Feeds for Gravity Forms vs AcyMailing integration for Advanced Custom Fields (ACF)