Definition
Email domain reputation recovery is a structured process for restoring trust with ISPs after a sending domain's reputation has been damaged. Recovery typically involves stopping all sending to investigate the cause, identifying the root problem (compromised account, list hygiene issues, authentication misconfiguration), cleaning the subscriber list of invalid and unengaged addresses, implementing missing authentication records, warming the domain gradually with highly engaged subscribers, and monitoring feedback loop data to confirm reputation improvement.
Recovery Steps
- Stop sending to prevent further reputation damage
- Diagnose the cause — check authentication, bounce rates, complaint data, blacklist status
- Clean the list — remove hard bounces, unengaged subscribers, invalid addresses
- Fix infrastructure — implement or repair SPF, DKIM, DMARC, reverse DNS
- Warm gradually — begin sending to the most engaged segment only
- Monitor recovery — track inbox placement rate by ISP during warm-up
- Escalate to normal volume — increase send volume gradually as metrics improve
Best Practices
- Begin recovery as soon as a reputation decline is detected — delays compound the damage
- Address the root cause before attempting warm-up, not during
- Use dedicated or warm sending infrastructure if available
- Expect recovery to take 2-8 weeks depending on the severity of the reputation damage
- Monitor reputation continuously after recovery to prevent recurrence
Related Glossary Terms
BIMI
BIMI (Brand Indicators for Message Identification) is an email standard that allows brands to display their logo next to their emails in supported email clients. It requires DMARC enforcement at quarantine or reject policy.
Bounce Classification
Bounce classification uses SMTP codes (550, 551, 552, 553, 554, 450, 451, 452) and enhanced status codes to categorise permanent and transient delivery failures.
Email Deliverability
Email deliverability is the ability to land in the recipient's inbox rather than the spam folder. It depends on sender reputation, authentication, list quality, and content practices.
DMARC Alignment
DMARC identifier alignment determines whether the domain in the From header matches the domains used in SPF and DKIM authentication. Strict or relaxed.
Acceptance Rate
Acceptance rate is the percentage of emails submitted for delivery that are accepted by the recipient's mail server, representing the first deliverability checkpoint before inbox placement is determined.
Email Account Health Score
A composite metric that evaluates the overall health of an email sending programme based on deliverability, engagement, list quality, and compliance factors.