I am interested mainly in collecting the email addresses, managing the subscribers, taking care of emails not used anymore, bounces, etc.
If I keep the plugin only, I don’t have the managed system. Freshmail is mainly for Polish market and does similar things to the global email programs for much lower price.
Also with sending emails I would like to use Freshmail, since it also shows the preview of the emails in most of Polish client email providers. So I can edit the newsletters to get the look I want in different emails in the browsers.
I can use freshmail also now. I can import the email addresses of my subscribers and use it straight away. But if somebody unsubscribes the address would remain in my wordpress installation. And, otherwise if somebody unsubscribes from my wordpress/website, the change would not affect the list in Freshmail… and I would like to have it merged.