How Do You Stop Spam Submissions on Your Contact Form?

If your contact form has started sending you strange offers, random links and messages that make no sense, you are not alone. Automated programs scan the internet for forms to fill, and almost every business site gets hit eventually.

Why spam is more than an annoyance

• It wastes your time sorting through junk
• Real inquiries can get buried or missed
• Automatic reply emails sent to fake addresses can hurt your sender reputation. See what email deliverability is

Spam can also hide in plain sight. A message that looks like a genuine question may be a trick to get you to click a link or reply with details, so treat unexpected requests with caution.

Ways to reduce it

• A hidden trap field. An extra field that people cannot see but automated programs fill in. Any message with it filled in gets thrown away
• A simple human check. A basic puzzle or an invisible test that tells people from programs
• A speed check. A person takes a few seconds to fill in a form. A program can do it in a blink, so instant submissions can be rejected
• Limits. Restrict how many messages one visitor can send in a short time
• Content filtering. Flag messages packed with links or known spam phrases
• A spam folder. Send suspicious messages to a separate folder rather than deleting them, so a real message is never lost for good

Most sites use two or three of these together, since no single method catches everything. Which ones fit best depends on how your form was built, so your web designer can advise.

Keep real customers in mind

Every extra step you add for visitors costs you a few genuine leads. Start with the invisible methods above, and only add a visible puzzle if the spam keeps coming. Keep the form itself short, too. For more on this, see whether your website should send automatic email confirmations.

Make sure real messages still arrive

• Submit your own form now and then, from a different device
• Check your spam folder for genuine inquiries that were caught by mistake
• Confirm the messages go to an inbox that someone actually reads

A good rule is to test after every change to the form or the website, since protection that is too strict can quietly block the people you want to hear from.

If spam suddenly spikes

A sudden flood usually means a wave of automated activity, or protection that has stopped working. Let your web designer know. Protection at the front door can help too, as explained in what a website firewall is. It is also worth remembering that an email address written out in plain text on a page invites spam, which is another reason a form is the safer way to be contacted.