STEP 1Select email providers

Google Workspace / Gmail

include:_spf.google.com

Microsoft 365 / Outlook

include:spf.protection.outlook.com

SendGrid

include:sendgrid.net

Mailgun

include:mailgun.org

Amazon SES

include:amazonses.com

Mailchimp / Mandrill

include:spf.mandrillapp.com

Zoho Mail

include:zoho.com

Fastmail

include:spf.messagingengine.com

ProtonMail

include:spf.protonmail.ch

Postmark

include:spf.mtasv.net

STEP 2Custom includes & IP addresses

Custom include domains (space or comma separated)

IP addresses / CIDR ranges (IPv4 and IPv6)

STEP 3Choose policy (all mechanism)

Strict (-all)

Reject all unauthorized senders. Recommended for production.

Soft fail (~all)

Mark unauthorized senders. Good for gradual rollout.

Neutral (?all)

No action taken. For testing only.

RESULTYour SPF record

TYPE

TXT

HOST / NAME

@

DNS LOOKUPS

0/10

v=spf1 ~all

SPF Record Generator