Top Dog allows you to specify wildcards when matching text.
When adding items to a list you can include the special characters below to match patterns of text.
| * | Match any substring (including null) |
| ? | Match any single character |
| # | Match any numeric character (0..9) |
| @ | Match any alpha character (A..Z, a..z) |
| $ | Match any alphanumeric character |
| ~ | Match any non-alphanumeric, non-space character |
For example: If you want to Match all email addresses from a certain company (say "widgets.com") you could add "*@widgets.com" instead of adding every address at widgets.com to your list.
Alternatively, if you keep getting spam from "bob@spammer.com" and they keep changing their address to bob1@spammer.com, bob2@spammer.com, etc. You could add bob#@spammer.com to your banned senders list to block all of bob's email.