Email authentication setup guides

Plain-English steps for getting SPF, DKIM and DMARC right. Dad tested, receiver approved.

Not sure where you stand? Check your domain first.

By mail service

• Google Workspace / Gmail
• Microsoft 365 / Outlook
• Mailchimp
• SendGrid
• Amazon SES
• Mailgun
• Postmark
• Zoho Mail
• HubSpot
• Salesforce
• Zendesk
• Shopify
• Constant Contact
• QuickBooks / Intuit

By DNS host

Where to add TXT and CNAME records.

• Cloudflare
• GoDaddy
• Namecheap
• Amazon Route 53
• Squarespace Domains
• Porkbun