I had to think a little longer about the disadvantages. Actually, I couldn't really think of any. Wait! There is one: not everyone may immediately understand how a tag-based system works.
Here is a selection of tag-based newsletter providers that are on the market with a reasonable pricing model, even for solopreneurs.
Advantages: German, very bosnia and herzegovina telegram screening well known, very powerful, European server location, API and HTML export.
Disadvantages: Relatively expensive (from €30 per month, the really exciting features are only available from €70 per month), no HTML templates (i.e. simply create beautiful emails), no own import of email addresses (they do that for you).
2) ActiveCampaign
Advantages: fairly inexpensive (from $9 per month with annual payment), nice HTML templates, very clear, easy-to-understand interface, great evaluations and tracking, visual system for automation, own import of email addresses (correctable in case of errors), HTML code and API.