SPF Generator: Create Your SPF Record Easily
Generate a valid SPF record, define authorized sending servers, and improve email authentication and deliverability.
Results
- Free SPF generator
- Instant results
- No signup required
What does this SPF generator analyze?
Build a complete SPF record and get a clean, valid configuration for your domain and email sending setup.
SPF record generation
Create a ready-to-use SPF TXT record for your domain.
Authorized sender configuration
Define which services and IPs can send emails.
SPF syntax builder
Automatically generate valid SPF format and structure.
Policy configuration
Choose how unauthorized senders are handled.
DNS lookup estimation
Check that your record stays under the 10 lookup limit.
Error prevention
Avoid duplicate records, invalid syntax, and misconfigurations.
SPF Record Examples
Here are common SPF configurations used across popular email setups.
Google Workspace
v=spf1 include:_spf.google.com ~all
Microsoft 365
v=spf1 include:spf.protection.outlook.com ~all
Mailgun
v=spf1 include:mailgun.org ~all
Custom IP
v=spf1 ip4:203.0.113.5 ~all
Multiple senders
v=spf1 include:_spf.google.com include:mailgun.org ~all
Strict policy
v=spf1 include:_spf.google.com -all
How SPF Works and Why It Matters
SPF (Sender Policy Framework) is a DNS TXT record that defines which servers are allowed to send emails for your domain.
When an email is received, the server checks your SPF record and compares the sending source against your policy.
If the sender is authorized, SPF passes. If not, it may fail and increase spam or rejection risk. A correct SPF setup improves authentication and supports deliverability.
SPF process includes:
Example:
mailX Related Email Authentication Tools
Create, validate, and optimize your email authentication setup for better deliverability.
Common SPF Errors This Tool Prevents
No SPF record
Domain has no protection.
Multiple SPF records
Only one SPF record is allowed.
Too many DNS lookups
More than 10 lookups → SPF fails.
Invalid syntax
Incorrect formatting breaks validation.
Overly permissive record
Weak policy reduces protection.
Missing policy
No ~all or -all defined.
SPF, Email Authentication & Deliverability Guides
What Is SPF and Why It Matters?
SPF (Sender Policy Framework) is a foundational email authentication method that helps verify whether an email is sent from an authorized source.
SPF vs DKIM vs DMARC: What’s the Difference and Why It Matters
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Email deliverability refers to the ability of your emails to reach your recipient’s primary inbox rather than being filtered into spam...
Free SPF Generator to Create a Valid SPF Record
Use this SPF generator to create an SPF record for your domain, define authorized sending servers, and improve email authentication.
SPF is a DNS TXT record that tells receiving servers which IPs and services can send emails on behalf of your domain. If your SPF record is missing or misconfigured, your emails are more likely to fail authentication or land in spam.
This tool helps you generate a valid SPF record, configure sending sources, and avoid common errors.
Your SPF Record
Generated Record
Complete SPF TXT record ready to copy
Configuration Summary
Included services, IPs, policy, and DNS lookups
Issues & Fixes
Detected risks & recommended improvements
Fix Your Deliverability with an Expert
Get a personalized audit of your SPF, DKIM, and email setup. Identify what’s impacting your deliverability and get clear, actionable fixes in a 30-minute session.