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An Email deliverability expert is a technical specialist who ensures that marketing emails land in the primary inbox rather than the spam folder. Their core responsibilities include:

• Authentication: Configuring DNS records to prove the sender's identity.
• Reputation Management: Monitoring domain and IP reputation scores.
• List Hygiene: Removing invalid emails ("Hard Bounces") and spam traps.

Deliverability experts work with DNS and postmaster tools:

• Protocols: Expert implementation of SPF, DKIM, and DMARC records.
• Monitoring: Using Google Postmaster Tools and Sender Score.
• Testing: Utilizing GlockApps or Litmus to test inbox placement.

The difference is infrastructure vs. content:

• Deliverability Expert (Technical/Infrastructure): Focuses on the "plumbing"-ensuring the email server talks to the receiving server correctly.
• Email Marketer (Creative/Content): Focuses on the "message"-writing the copy and designing the graphics.