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Hashcash for Contact Form 7

Add Hashcash spam protection to Contact Form 7.

3 reviews
Average Rating
5 out of 5 stars
Good alternative to captcha
By , for WP 4.0

Nice work

Works as advertised
By , for WP 3.9.2

Add the hashcash shortcode to your contact form 7 form and you're done.

Exactly as promissed
By , for WP 3.5

Prevents spam efficiently as promised without bothering the user of your contact form.

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