Since you can search based on "starts with", "ends with", or "contains", no wildcard is needed. When searching the attachment name, any asterisk placed at the start or end of the search will be ignored.
All searches are applied to both the raw version and the mime decoded version (with the exception of the message body, where only the mime-decoded version is used.)
Yes, but not at the beginning or the end of the rule (whitespace on either end will be trimmed off). Likewise, whitespace at the beginning or end of each line of the message will also be trimmed.
No, Approved sender rules always takes precedence over Custom Filter rules.
Custom Filter rules are run in groups, based on the "Action" they perform. If two Custom Filter rules match on the same message, the rules will be applied in the following order (with the first match determining the outcome).
Order | Action | Notes |
---|---|---|
1 | Always deliver | Take priority over all other rules (and filters) when there's a match. |
2 | Send to trash | Takes priority over "Quarantine" rules. Does not override Approved Senders. |
3 | Quarantine, trash if spam | Does not override Approved Senders. If identified as spam by something other than a Custom Filter rule, the message is sent to trash. |
4 | Quarantine | Does not override Approved Senders. |
5 | Deep Filter | These filters only run on messages that have not been identified as spam. |
No, Custom Filter rules that are set to "always deliver" will override all other filters when there's a match. That includes messages with viruses, spoofed senders, blocked senders, and other Custom Filter rules that are set to "quarantine". Be sure that the criteria of your "always deliver" Custom Filter rules are not too broad.