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Filters are defined in Webmail and are applied to any incoming message (regardless if your logged in or using webmail).
(1) To define filters open the filter section in webmail:
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Following options are available for scope defintiondefinition:
(1): all rules must match to execute the action(s).
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(3): Actions will be executed to all emails. In this case you don't need to define a rule.
Rules
Define the rules to filter incoming emails:
(1): To filter the message select an appropriate element of the message and add the criteria.
(2): Add Add or delete a rule.
Action
Defines action(s) which should be executed for filtered emails:
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Number is your mobile or fax number with the format "+"[country code without leading zeros][area code without leading zero][number]
For example use +41791234567 for
Country code : 0041
Area code: 079
Number: 123 45 67