Optimizing email deliverability - how to avoid spam filters
Problems with the deliverability of emails – contrary to popular belief – do not only concern mass mailings. “Overzealous” spam filters mean that messages of all kinds are wrongly classified as spam – regardless of whether they are cold mails, newsletters, transactional emails (i.e., notifications from various applications), or simple messages sent manually using email programs. On a global scale, only 83% of messages sent reach the recipients’ inboxes.