Deliverability Center
Cold Email Deliverability: Audit, Diagnose and Fix
Email deliverability is the ability to reach the inbox—not merely hand a message to the recipient server. A complete audit combines domain authentication, reputation, list quality, message construction and sending behavior.
Run the free deliverability auditPre-send deliverability checklist
Complete these checks before increasing campaign volume.
/10 checked
A checklist cannot measure real inbox placement by itself. Combine configuration checks with controlled seed testing and campaign-level bounce, complaint and reply monitoring.
Common deliverability questions
- What is an email deliverability audit?
- It is a structured review of authentication, reputation, list quality, message construction and sending behavior to identify why messages may not reach the inbox.
- Do SPF, DKIM and DMARC guarantee inbox placement?
- No. They establish identity and alignment, but mailbox providers also evaluate reputation, engagement, complaints, bounces and message patterns.
- When should a team rerun the audit?
- Rerun it after changing providers, domains, DNS records, tracking or volume—and whenever replies, bounces or inbox placement change unexpectedly.
Audit infrastructure before rewriting copy
A strong message cannot compensate for missing authentication or a damaged sender reputation. Check SPF, DKIM and DMARC alignment first, then review blacklist status, reply configuration and sending patterns.
- âś“Confirm SPF includes every authorized sending service.
- âś“Verify DKIM signing and DMARC alignment.
- âś“Check links, redirects and unsubscribe handling.
- âś“Keep volume increases gradual and monitor bounce signals.
Treat the audit as a repeatable release check
Run the checklist whenever you add a domain, change a sending provider, alter tracking, launch a new campaign or see an unexpected drop in replies.