Why are my newsletters being marked as spam by my recipients?

Spam filters analyze an email based on numerous criteria, including the sender address, subject line, and message content. These criteria are determined by complex algorithms developed by the spam filter providers. If a certain number of these criteria are met, the email is classified as spam and handled accordingly.

Tips on how to correctly set up your sender domain can be found here.

The exact details of these algorithms are strictly confidential to prevent senders from finding ways to bypass spam filters.

For legitimate email senders, this can pose a challenge as the exact criteria for spam classification are unknown. This means that senders often don’t know exactly why their messages were marked as spam and must rely on feedback to adjust their messages accordingly.

Spam Test in MAILINGWORK

To check your newsletter against spam criteria before sending, MAILINGWORK offers a spam test. This service allows you to review your newsletter for potential spam characteristics before sending.

1. Open your newsletter in the MAILINGWORK platform.
   
2. Navigate to the 'Test' tab.
   
3. There, you’ll find the option for the spam test.
   

Once you start the test, your email will undergo a comprehensive review.

After a short review period, the results of the spam test will be displayed. You’ll receive information on whether your email complies with the criteria of major spam filter providers. This feedback allows you to make any necessary adjustments to ensure that your newsletter is successfully delivered and not classified as spam.

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