Feb 6, 2026 | By: PhotoBiz Knowledge Base
The PhotoBiz Form & Contract Builder includes built-in spam protection tools to help keep unwanted messages out of your inbox. If a spam submission gets through one of your forms, you can quickly block that sender to prevent future submissions. This guide shows you how to block a sender directly from your Notification Center and explains each blocking option so you can choose the safest approach. By the end of this guide, the sender will no longer be able to submit forms on your website.
Log into your PhotoBiz account and open your Control Panel. Click the Notifications icon in the top right corner of your screen to open the Notification Center.
When the Notification Center opens on the right side of your screen, locate the form submission you want to block. Click the sender’s name or email address shown in the From/Date column to open the sender’s details.
In the sender details window, click the Block Sender button. This opens the blocking options for that sender.
Choose how you want to block the sender and confirm your selection. After choosing an option, click Yes, Block Sender to apply the block. Once confirmed, future form submissions from that sender will be blocked.
Blocking Options Explained
PhotoBiz gives you three ways to block a sender. It is important to choose the option that best fits the situation.
Email Address (Recommended)
Blocks only the specific email address used in the submission. This is the safest option and will not affect other visitors or potential clients.
Domain (Use with extreme caution)
This option blocks all email addresses from the selected domain.
For example, if you block gmail.com, no one with an email address ending in @gmail.com will be able to submit forms on your website. This includes real clients, leads, and inquiries.
Only use domain blocking if you are absolutely certain that the entire domain should be blocked.
IP Address
Blocks submissions from the sender’s specific internet connection. This can be effective for repeated spam, but it may not be permanent if the sender’s IP address changes.
You can review all blocked email addresses, domains, and IP addresses at any time from your PhotoBiz Control Panel.
To access your blocked senders, go to Policy Settings in your Control Panel. From there, you can see a full list of everything that has been blocked through your forms.
This is especially important if you used Domain blocking, since blocking a domain prevents all email addresses from that domain from submitting forms.
If a legitimate client is unable to submit a form, review your blocked list and remove any entries that should no longer be blocked. If clients receive an EC4 error when submitting a form, always check your blocked domain list first.
Learn more in the guide on managing spam protection in PhotoBiz.