Auto subscribe to campaign monitor, constant contact, getresponse, icontact, infusionsoft, mailchimp.

Noted That:

To install correctly this autoresponder.zip.
Fisrt Download the autoresponder.zip to your computer
Extract/Open autoresponder.zip to Your Computer.
Then, Find readme.txt file inside autoresponder.zip and Open readme.txt.
Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
Then, Follow the the Tips Below.

Start the Tips:

1. First Download "autoresponder.zip" Plugin to your Local Computer. (Click Download)

2. Then, Login to your "yourdomain.com/wp-admin" Dashboard.

3. Then, Click on "Plugins" + "Add New" from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse "autoresponder.zip" Downloaded plugin from your computer, Where you downloaded autoresponder.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "Autoresponder" folder is added on left sidemenu. Now, Click on "Autoresponder" folder.

Noted that: If you do not see "Autoresponder" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about Autoresponder Configurtions and Settings or How to work "Autoresponder" in your WordPress site.

After Activated Plugin According to Step-6 then,

Go to "Plugins" + "Installed Plugin" from Wordpress Admin Panel Leftside Menu.
or Direct go to: https://yourdomain/wp-admin/plugins.php
Then, Find "Autoresponder" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is Autoresponder
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide
Automatic installation Automatic installation is the easiest option as WordPress handles the file transfers itself and you don’t need to leave your web browser. To do an automatic install, log in to your WordPress dashboard, navigate to the Plugins menu and click Add New. In the search field type “Autoresponder” and click Search Plugins. Once you’ve found our plugin you can view details about it such as the the rating and description. Most importantly, of course, you can install it by simply clicking Install Now. Manual Installation Unzip the files and upload the folder into your plugins folder (/wp-content/plugins/) overwriting previous versions if they exist. Activate the plugin in your WordPress admin area. configuration Easy steps to install the plugin: Upload “autoresponder” folder/directory to the /wp-content/plugins/ directory. Activate the plugin through the ‘Plugins’ menu in WordPress.

Guide

Automatic installation

Automatic installation is the easiest option as WordPress handles the file transfers itself and you don’t need to leave your web browser. To do an automatic install, log in to your WordPress dashboard, navigate to the Plugins menu and click Add New.

In the search field type “Autoresponder” and click Search Plugins. Once you’ve found our plugin you can view details about it such as the the rating and description. Most importantly, of course, you can install it by simply clicking Install Now.

Manual Installation

Unzip the files and upload the folder into your plugins folder (/wp-content/plugins/) overwriting previous versions if they exist.
Activate the plugin in your WordPress admin area.

configuration

Easy steps to install the plugin:

Upload “autoresponder” folder/directory to the /wp-content/plugins/ directory.
Activate the plugin through the ‘Plugins’ menu in WordPress.

getresponse, icontact, infusionsoft, mailchimp, contact, constant, subscribe, campaign, monitor, auto,

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Reffered: https://wordpress.org/