Provider SPF includes
Every include: below was resolved against live DNS when this page
was built. The lookup cost is what that include actually charges against your ten-lookup
budget, following the whole chain — not the one lookup it appears to cost.
Mailbox hosting
| Provider | SPF include | Lookups | IP ranges |
|---|---|---|---|
| Fastmail | spf.messagingengine.com |
1 | 2 |
| GoDaddy Email | secureserver.net |
3 | 44 |
| Google Workspace | _spf.google.com |
1 | 8 |
| Hostinger Email | _spf.mail.hostinger.com |
3 | 7 |
| iCloud Mail (Apple) | icloud.com |
5 | 24 |
| IONOS Mail | _spf-eu.ionos.com |
1 | 9 |
| Mailfence | _spf.mailfence.com |
1 | 2 |
| Microsoft 365 | spf.protection.outlook.com |
1 | 11 |
| Migadu | spf.migadu.com |
4 | 23 |
| Namecheap Private Email | spf.privateemail.com |
4 | 16 |
| OVHcloud Email | mx.ovh.com |
3 | 2 |
| Proton Mail | _spf.protonmail.ch |
2 | 11 |
| Rackspace Email | emailsrvr.com |
1 | 7 |
| Yandex 360 | _spf.yandex.net |
4 | 14 |
| Zoho Mail | zohomail.com |
2 | 8 |
| Zoho Mail (EU) | zoho.eu |
2 | 10 |
Transactional email API
| Provider | SPF include | Lookups | IP ranges |
|---|---|---|---|
| Amazon SES | amazonses.com |
1 | 12 |
| Elastic Email | _spf.elasticemail.com |
2 | 0 |
| Mailchimp Transactional (Mandrill) | spf.mandrillapp.com |
1 | 12 |
| Mailgun | mailgun.org |
5 | 30 |
| Mailjet | spf.mailjet.com |
1 | 5 |
| Postmark | spf.mtasv.net |
1 | 4 |
| Resend | amazonses.com |
1 | 12 |
| Sendinblue (legacy include) | spf.sendinblue.com |
1 | 10 |
| SMTP2GO | spf.smtp2go.com |
1 | 10 |
| SparkPost | _spf.sparkpostmail.com |
2 | 0 |
| Twilio SendGrid | sendgrid.net |
2 | 15 |
Marketing / newsletter platform
| Provider | SPF include | Lookups | IP ranges |
|---|---|---|---|
| ActiveCampaign | emsd1.com |
1 | 5 |
| Adobe Marketo Engage | mktomail.com |
1 | 12 |
| AWeber | aweber.com |
6 | 62 |
| beehiiv | no shared include |
— | — |
| Brevo | spf.brevo.com |
1 | 10 |
| Campaign Monitor | cmail1.com |
1 | 6 |
| Constant Contact | spf.constantcontact.com |
1 | 2 |
| GetResponse | _spf.getresponse.com |
1 | 4 |
| Kit (ConvertKit) | no shared include |
— | — |
| Klaviyo | no shared include |
— | — |
| Mailchimp | servers.mcsv.net |
1 | 3 |
| MailerLite | _spf.mlsend.com |
1 | 2 |
| Salesforce Marketing Cloud | cust-spf.exacttarget.com |
1 | 50 |
| Substack | no shared include |
— | — |
CRM & sales platform
| Provider | SPF include | Lookups | IP ranges |
|---|---|---|---|
| Freshsales | _spf.freshsales.io |
3 | 15 |
| HubSpot | _spf.hubspot.com |
3 | 24 |
| Pipedrive | _spf.pipedrive.com |
2 | 7 |
| Salesforce (Sales & Service Cloud) | _spf.salesforce.com |
2 | 0 |
| Zoho CRM | zcsend.net |
1 | 10 |
Helpdesk & shared inbox
| Provider | SPF include | Lookups | IP ranges |
|---|---|---|---|
| Freshdesk | email.freshdesk.com |
7 | 70 |
| Front | no shared include |
— | — |
| Gorgias | _spf.gorgias.io |
6 | 30 |
| Help Scout | helpscout.net |
2 | 6 |
| Intercom | no shared include |
— | — |
| Zendesk | mail.zendesk.com |
1 | 5 |
Ecommerce & website builder
| Provider | SPF include | Lookups | IP ranges |
|---|---|---|---|
| BigCommerce | _spf.bigcommerce.com |
1 | 7 |
| Etsy | _spf.etsy.com |
1 | 0 |
| Shopify | shops.shopify.com |
1 | 0 |
| Squarespace | squarespace-mail.com |
1 | 24 |
| Wix | _spf.wix.com |
4 | 0 |
Security gateway
| Provider | SPF include | Lookups | IP ranges |
|---|---|---|---|
| Barracuda Email Gateway | spf.ess.barracudanetworks.com |
1 | 1 |
| Mimecast | _netblocks.mimecast.com |
8 | 68 |
| Proofpoint | no shared include |
— | — |
| Sophos Email | no shared include |
— | — |
| Trend Micro Email Security | spf.tmes.trendmicro.com |
3 | 31 |
SaaS notification sender
| Provider | SPF include | Lookups | IP ranges |
|---|---|---|---|
| Atlassian (Jira & Confluence) | _spf.atlassian.net |
2 | 14 |
| Docusign | no shared include |
— | — |
| Greenhouse | greenhouse-outbound-mail.stripe.com |
2 | 16 |
| Qualtrics | _spf.qualtrics.com |
1 | 15 |
| Slack | _spf.slack.com |
1 | 0 |
| Stripe | no shared include |
— | — |
| SurveyMonkey | spf.surveymonkey.com |
1 | 6 |