Honeypot

Honeypost is the easiest and least effective way of protecting your forms. A honeypot is a hidden field that is only visible to bots. If a bot fills in the field, the submission will be rejected. You can enable the honeypot by adding a hidden checkbox to your form:

<form>
  ...
  <input type="checkbox" name="botcheck" style="display: none;" />
  ...
</form>

Note

Using honeypot is not required, but it is recommended if you are not using any other form of spam protection.