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BounceShield is an automated email protection service that verifies every address in your contact list before campaigns are sent. It identifies invalid, inactive, and risky email addresses to prevent bounces and protect your sender reputation from damage caused by undeliverable emails.
High bounce rates directly damage your sender reputation and can result in ISPs blocking your emails entirely. BounceShield prevents this by catching invalid addresses before they cause harm. With email lists decaying at 22.5% annually due to job changes, abandoned accounts, and typos, automated protection ensures your deliverability stays strong without manual intervention.
BounceShield integrates with your email marketing platform or CRM to automatically scan contact lists before sending. The service performs multi-layer verification including syntax checks, domain validation, MX record lookup, and mailbox verification. When risky addresses are detected, they are flagged or removed from send lists. This proactive approach prevents bounces from occurring rather than dealing with them after the fact.
BounceShield is an automated, always-on protection layer that integrates with your sending infrastructure. Unlike one-time verification services, it continuously monitors and validates your lists before each send, providing proactive bounce prevention rather than reactive list cleaning.
With BounceShield active, you should maintain a bounce rate below 2%. Most ESPs consider rates above 2% problematic, and rates above 5% can trigger account suspensions or deliverability penalties. Proper use of BounceShield typically keeps bounce rates under 1%.
BounceShield effectively prevents hard bounces caused by invalid addresses, non-existent domains, and syntax errors. It can also identify some soft bounce risks like full mailboxes. However, temporary server issues or rate limiting at the recipient end may still cause occasional soft bounces.
For active sending lists, verification before each major campaign is recommended. For lists with regular sending, weekly verification keeps data fresh. Dormant lists should be verified before any reactivation, as email decay accelerates when lists are not regularly maintained.
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