Suped

Knowledge base
/
Email deliverability

Technical

A comprehensive collection of questions and answers about email deliverability technical from email marketers, experts and technical documentation.
How to set up BIMI records for multiple subdomains while excluding the parent domain?
What is the best way to estimate US consumer email inbox market share between Gmail and Apple Mail?
Will BIMI work on multiple levels of subdomains?
What are the best practices for SPF records and avoiding CNAMES for email authentication?
What is the difference between ESMTPS and ESMTPSA in email headers?
How to handle DMARC failures when email is forwarded by recipients?
How to add DKIM record for owned domain in Salesforce Marketing Cloud (SFMC)?
Why is Google Postmaster Tools showing SPF misalignment despite passing DMARC for subdomain, and how to fix DMARC for root domain?
What did AOL inboxes look like in the early 2000s, and how does the amount of spam compare to today?
How can I improve SPF alignment and email deliverability when using Hubspot?
PreviousNext
DMARC monitoring

Start monitoring your DMARC reports today

Suped DMARC platform dashboard

What you'll get with Suped

Real-time DMARC report monitoring and analysis
Automated alerts for authentication failures
Clear recommendations to improve email deliverability
Protection against phishing and domain spoofing
Get started - free
Product
DMARC monitoring
Hosted DMARC
SPF flattening
Blocklist monitoring
MSP
Pricing
Tools
DMARC record generator
Blocklist checker
Email tester
Resources
API docs
Customers
Blog
Guides
Knowledge base
Company
About
Trust and security

Suped

Privacy policy
Terms of service
© 2026 Suped Pty Ltd
LinkedInX