The Best SPF Record Generator Guide

Understand why compiling an accurate list of your email senders is crucial for deliverability.

1
The Role of the SPF Record
Think of an SPF record as a public guest list published in your DNS. When an email arrives at a receiving server (like Gmail), the server checks this list. If the sender's IP address is on your list, the email is allowed in. If not, it is flagged as spam or rejected.
2
The Danger of Multiple Records
Our Best SPF Record Generator tool is designed to create a single, unified string. The official RFC protocol strictly prohibits having more than one TXT record starting with v=spf1. If you have two, receivers treat it as if you have zero.

Understanding Mechanisms

What do the abbreviations in your generated string actually mean?

The "a" and "mx" Tags

The a tag allows the IP address of your main website to send mail. The mx tag allows the servers that receive your incoming mail to also send outbound mail. Usually required for VPS hosted emails.

The "include" Tag

Used for third-party services. include:_spf.google.com tells receivers to trust all of Google's servers. Essential if you use Google Workspace or Office 365.

The Policy Suffix: Your record must end with a policy. We recommend ~all (Soft Fail) to mark unauthorized mail as spam, or -all (Hard Fail) to completely reject it. Never use +all.

Live SPF Builder

Use the Best SPF Record Generator to build your customized string. We will simultaneously perform a live DoH query on your domain to warn you of any existing SPF conflicts.

Allow A Record (Website IP)
Does the server hosting your website send emails?
Allow MX Records
Do your incoming mail servers also send outbound mail?

Third-Party Services

Google Workspace
Adds include:_spf.google.com
Microsoft Office 365
Adds include:spf.protection.outlook.com
SendGrid / Mailgun
Adds include:sendgrid.net include:mailgun.org

Your Generated SPF Record

Instructions

The Best SPF Record Generator

Stop guessing syntax. Use the best SPF record generator to compile a flawless, RFC-compliant string that instantly authorizes all your email servers.

Live DNS Collision Audit

Unlike basic tools, our best SPF record generator performs a real-time DoH check on your domain to warn you if a conflicting record already exists.

Third-Party Integrations

With one click, the best SPF record generator seamlessly integrates major ESPs like Google Workspace, Office 365, and Sendgrid into your DNS configuration.

Secure Enforcement Policies

Ensure your domain is safe from spoofing. The best SPF record generator guides you through selecting appropriate Soft Fail or Hard Fail mechanisms.

IPv4 & Custom Routing

Need to whitelist specific hardware? The best SPF record generator effortlessly incorporates custom IPv4 and IPv6 addresses into your final DNS payload.

Deliverability Optimization

A perfect SPF record is the foundation of inbox placement. Rely on the best SPF record generator to build the first pillar of your DMARC compliance strategy.