Include a SendinBlue signup option with your Easy Digital Downloads checkout

Noted That:

To install correctly this easy-digital-downloads-sendinblue.zip.
Fisrt Download the easy-digital-downloads-sendinblue.zip to your computer
Extract/Open easy-digital-downloads-sendinblue.zip to Your Computer.
Then, Find readme.txt file inside easy-digital-downloads-sendinblue.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 "easy-digital-downloads-sendinblue.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 "easy-digital-downloads-sendinblue.zip" Downloaded plugin from your computer, Where you downloaded easy-digital-downloads-sendinblue.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "Easy Digital Downloads – SendinBlue" folder is added on left sidemenu. Now, Click on "Easy Digital Downloads – SendinBlue" folder.

Noted that: If you do not see "Easy Digital Downloads – SendinBlue" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about Easy Digital Downloads – SendinBlue Configurtions and Settings or How to work "Easy Digital Downloads – SendinBlue" 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 "Easy Digital Downloads – SendinBlue" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is Easy Digital Downloads – SendinBlue
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide
Following are the steps to install the Easy Digital Downloads – SendinBlue Download the latest version of the Easy Digital Downloads – SendinBlue to your computer from here. With an FTP program, access your site?s server. Upload (copy) the Plugin file(s) or folder to the /wp-content/plugins folder. In your WordPress Administration Panels, click on Plugins from the menu. You should see Tweet Old Posts Plugin listed. If not, with your FTP program, check the folder to see if it is installed. If it isn?t, upload the file(s) again. If it is, delete the files and upload them again. To turn the WP Product Review on, click Activate. Check your Administration Panels or WordPress blog to see if the Plugin is working. You can change the plugin options from Tweet Old Posts under settings menu. Alternatively you can also follow the following steps to install the WEasy Digital Downloads – SendinBlue In your WordPress Administration Panels, click on Add New option under Plugins from the menu. Click on upload at the top. Browse the location and select the WP Product Review Plugin and click install now. To turn the WP Product Review Plugin on, click Activate. Check your Administration Panels or WordPress blog to see if the Plugin is working. You can change the plugin options from Tweet Old Posts under settings menu.

Guide

Following are the steps to install the Easy Digital Downloads – SendinBlue

Download the latest version of the Easy Digital Downloads – SendinBlue to your computer from here.
With an FTP program, access your site?s server.
Upload (copy) the Plugin file(s) or folder to the /wp-content/plugins folder.
In your WordPress Administration Panels, click on Plugins from the menu.
You should see Tweet Old Posts Plugin listed. If not, with your FTP program, check the folder to see if it is installed. If it isn?t, upload the file(s) again. If it is, delete the files and upload them again.
To turn the WP Product Review on, click Activate.
Check your Administration Panels or WordPress blog to see if the Plugin is working.
You can change the plugin options from Tweet Old Posts under settings menu.

Alternatively you can also follow the following steps to install the WEasy Digital Downloads – SendinBlue

In your WordPress Administration Panels, click on Add New option under Plugins from the menu.
Click on upload at the top.
Browse the location and select the WP Product Review Plugin and click install now.
To turn the WP Product Review Plugin on, click Activate.
Check your Administration Panels or WordPress blog to see if the Plugin is working.
You can change the plugin options from Tweet Old Posts under settings menu.

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Reffered: https://wordpress.org/