20Deliverability foundation
Map SPF, DKIM, and DMARC before changing DNS
Document every legitimate sender, then build email authentication records that improve trust without accidentally blocking real mail.
BEFORE
AFTER
01 / Do it yourself
From zero to working.
Read the complete sequence before starting. Use a test account or non-production copy whenever the workflow touches important business data.
-
01
STEP 1
List mailbox, newsletter, CRM, invoice, form, and support senders.
-
02
STEP 2
Check current SPF, DKIM, and DMARC records.
-
03
STEP 3
Remove obsolete senders and resolve multiple SPF records.
-
04
STEP 4
Start DMARC in monitoring mode and review reports before tightening policy.
02 / Check before you change
Useful guardrails.
✓DNS mistakes can interrupt email
✓There must be one effective SPF record
✓DKIM setup differs by sender
✓Move DMARC policy gradually
Do it for me
Stuck? Send this page to Chaitanya.
Message at any hour with the guide link and a screenshot. Get a quick answer, a guided working session, or a complete setup configured for your workflow.