Hard bounces are permanent and must be removed immediately. They signal invalid addresses and can quickly damage your sender reputation if ignored. Repeated...
Yahoo Mail and AOL (Yahoo-hosted consumer brands) enforce bulk-sender standards: SPF and DKIM, a DMARC policy of at least p=none that passes with...
Marketing email bounces are usually a list-quality, authentication, or reputation problem — not a subject-line problem. Treat under 2% bounce rate as healthy,...
Track hard and soft bounces separately. Hard bounces are permanent failures and the metric that most damages sender reputation. For permission-based campaigns, aim...
