Microsoft 365include:spf.protection.outlook.comRequired for most Microsoft 365 outbound mail.Google Workspaceinclude:_spf.google.comGoogle recommends ~all for most Workspace domains.Twilio SendGridinclude:sendgrid.netTypical manual SPF include; automated security may use CNAMEs instead.Mailguninclude:mailgun.orgAdd to an existing SPF record for Mailgun sending domains.Constant Contactinclude:spf.constantcontact.comOptional only; Constant Contact says DKIM alignment is normally the right DMARC path.Zoho Mailinclude:zoho.comZoho also documents one.zoho.com for multi-service deployments.Amazon SESinclude:amazonses.comFor custom MAIL FROM domains; default SES MAIL FROM is already covered by amazonses.com.

SPF Record Generator

Allow These Senders

Output