Currently, if you want an action x applied to e-mails which meet the conditions 1 or 2 or 3 but not 4, you have to create 3 rules: Condition: 1 & ~4 Action: x Condition: 2 & ~4 Action: x Condition: 3 & ~4 Action: x It would be nice to be able to combine AND and OR conditions in one rule: Condition: (1 | 2 | 3) & ~4 Action: x Handling exceptions would become more comfortable.