Best SPF Flattening Recommendation
If your SPF record includes too many DNS lookups, it can break — and that harms deliverability. Flattening your SPF record means converting all include: statements into direct IP addresses to stay under the 10-lookup limit.
Best tool?
We recommend SPF-Record.com or EasyDMARC’s SPF Flattening tool — both let you flatten your SPF with a single click.
Pro tip:
- Re-check your SPF record every time you update your email service providers.
- After flattening, test your DNS setup using tools like MXToolbox or Mail-Tester.