Contact Form plugin from www.123formulier.nl
Make sure you have unzipped the folder in the root of the /wp-content/plugins/ directory.
The most effective way is using the API key.
No, you don't have to paste the code again.
Please see author's blog.
Requires: 2.0.2 or higher
Compatible up to: 4.2.5
Last Updated: 2015-7-27
Active Installs: 100+
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