In order to block an email address using Usermin, one has to log into the Usermin interface.
The URL is typically:
After login, you will end up in the Mail view. To add a filter, click the Usermin tab:
Once you have selected the right tab click
Add a new email filter and fill in the corresponding fields.
For example, below we are going to discard all messages from
Let us know in the comments if you have any other valuable spam management tips.