add mailchimp action

src/essentials-for-yootheme-pro/addons/forms/_partials/action-mailchimp.md

@@ -0,0 +1,41 @@
+## Mailchimp Action {#mailchimp}
+
+<div class="tm-resource-icon">
+    <!--@include: @essentials-for-yootheme-pro/assets/brands/mailchimp.svg-->
+</div>
+
+The **Mailchimp Action** creates, updates or removes a member from a [Mailchimp](https://mailchimp.com/) audience.
+
+### Add member to a list {#mailchimp-member-upsert}
+
+Create or update a Mailchimp audience member.
+
+| Setting | Description | Required | Dynamic |
+| --- | --- | :---: | :---: |
+| *Account* | The Mailchimp account specified with oAuth or an API Key. | &#x2713; |
+| *Audience* | The audience to which to add a new member or alter an existing. | &#x2713; |
+| *Update if exists* | Specifies if the member data should be updated if it already exists. |
+| *Skip Merge Fields validation* | Specifies if Merge Fields validation should be skipped. |
+| *Email Address* | Member's email address. | &#x2713; | &#x2713; |
+| *Email Type* | The email type the member has requested to get (html or text). | | &#x2713; |
+| *Status* | Member's subscription status, for double opt-in set as pending. | |  &#x2713; |
+| *Language* | Member's language, used for segmentation purpose. If omitted Mailchimp will attempt to detect it with member's further interaction. | |  &#x2713; |
+| *VIP* | Mark the member as [VIP](https://mailchimp.com/help/designate-and-send-to-vip-contacts) for targeted campaigns. | | &#x2713; |
+| *Location* | Member's location latitute and longitude separated by a comma. Used for segmentation purpose. | | &#x2713; |
+| *Tags* | A list of tags, separated by a comma or newline, associated with the member. Used for segmentation purpose. | | &#x2713; |
+| *Merge Fields* | Specific to the selected audience, [Merge Fields](https://mailchimp.com/developer/marketing/docs/merge-fields) determines additional information about members. | | &#x2713; |
+| *Interests* | Specific to the selected audience, determines the member interests used in targeted campaigns. | | &#x2713; |
+| *Marketing Permissions* | Specific to the selected audience, determines the memebers marketing consents. | | &#x2713; |
+<!--@include: ./common-action-settings.md-->
+
+### Remove member from a list {#mailchimp-member-remove}
+
+Archive or delete a Mailchimp audience member.
+
+| Setting | Description | Required | Dynamic |
+| --- | --- | :---: | :---: |
+| *Account* | The Mailchimp account specified with oAuth or an API Key. | &#x2713; |
+| *Audience* | The audience from which to remove a member. | &#x2713; |
+| *Email Address* | Member's email address. | &#x2713; | &#x2713; |
+| *Delete Instead* | Delete instead of archive. The member will be removed from the list and all it personally identifiable information will be deleted. This will make it impossible to re-import the list member. |
+<!--@include: ./common-action-settings.md-->

src/essentials-for-yootheme-pro/addons/forms/actions.md

@@ -7,6 +7,7 @@ Actions are multi-instance functions that will run sequentially, after a form ha
 <!--@include: ./_partials/action-alter.md-->
 <!--@include: ./_partials/action-download.md-->
 <!--@include: ./_partials/action-email.md-->
+<!--@include: ./_partials/action-mailchimp.md-->
 <!--@include: ./_partials/action-message.md-->
 <!--@include: ./_partials/action-redirect.md-->
 <!--@include: ./_partials/action-validate.md-->