How to create an email filter at Polar55

With an email filter, you can set up various rules for how you want to handle emails that, for example, contain certain words or come from specific senders.

You can choose to set up email filters that apply to all your email accounts (Global Email Filters) or Email Filters that apply to specific email accounts:

After you have chosen the type of filter you want, click 'Create filter', and then the options as shown below:

Email Filters
Create a New Filter
Please create a filter below. You can add multiple rules to match subjects, addresses, or other parts of the message. You can then add multiple actions to take on a message such as to deliver the message to a different address and then discard it.
Filter Name
My new filter
The filter name must be unique. If you give the filter the same name as another filter, the previous filter will be overwritten.
Rules

Subject
contains
pills
Actions
Discard Message
Create
- +
- +

You create the filter in the following way:

  1. Start by giving the filter a name
  2. Then choose the rules that should apply. In the example above, for instance, I have specified that if an email contains the word 'pills' in the subject field, the email should be deleted.
  3. If you want multiple rules to be fulfilled, you can click on the small plus, as shown in the picture above, and add more. For example, you could choose to say that the subject must contain both 'pills' and 'offers' for it to be deleted.
  4. You can also add more actions if you want more things to happen with the email.

In this guide, we will not go through all the possible rules you can set up, but you can see for yourself if you can set up one that targets the emails you want to filter.

How to test your new filter

After you have created your filter, you can test if it works under 'Filter Test' in the filter overview.

Here you can take the entire source from the email you want to filter, copy it, and test if your filter catches it.

The mail source, for example, can be obtained via your webmail, where you can click more->show source and then copy the source and paste it into the test, as shown below.

If you use Outlook or Gmail, you can also find the source through them.

Below we have copied the mail source into the test.

Filter Test
Enter a complete email message (including headers) below to see how the system will process it with the current filters in place.
Return-Path: <domain@spamsender.com>
Delivered-To: contact@yourdomain.com
Received: from cp01.polar55.com
    by cp01.polar55.com with LMTP
    id sOf3Bi5ha2SychMAAkPhiQ
    (envelope-from <domain@spamsender.com>)
    for <contact@yourdomain.com>; Mon, 22 May 2023 14:33:50 +0200
Return-path: <domain@spamsender.com>
Envelope-to: contact@yourdomain.com
Delivery-date: Mon, 22 May 2023 14:33:50 +0200

If I press 'Test filter', I get the following result, where you can see that our filter catches this particular mail:

Filter Trace Results:
read_message_body 103
Sub-condition is false: not first_delivery
Condition is false: not first_delivery and error_message
Condition is false: $header_subject: contains pills
Return-path copied from sender
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