Explains Different Types of Email Bounce

technology · EN

An email bounce occurs when an email fails to reach the recipient’s inbox and is rejected by the receiving server. The blog explains three main bounce types: hard bounces (permanent issues like invalid or non-existent email addresses), soft bounces (temporary problems such as full inboxes or server downtime), and block bounces (emails rejected due to spam filters, blacklisting, or authentication failures). High bounce rates negatively impact sender reputation and email deliverability. To keep bounce rates low, the blog recommends regular list cleaning, using email verification, enabling double opt-in, authenticating domains (SPF, DKIM, DMARC), and avoiding sending emails to outdated or unverified contacts.