When we send out the newsletter, of course, we expect the subscriber to receive and open the email. If the letter is opened by at least one of the three addressees, this will already be a good result. Unfortunately, there are several reasons why the letter will not even appear in the “Inbox” of the mailing list subscriber. The spam filter may be to blame, immediately marking the letter as suspicious and sending it to the Spam folder. Also, it can happen even if the content of the email itself does not contain illegal content.

Before general mailing to the entire audience, it is recommended to check if the spam filter is blocking the message. We recommend confirming the domain, which is guaranteed to increase the deliverability of the mailing list.