Email authentication setup guides

The exact SPF, DKIM, and DMARC records to add for your email provider — in order, with the provider-specific gotchas. Pick your platform below.

Mailgun

Transactional email

Postmark

Transactional email

Brevo (Sendinblue)

Marketing & transactional

Mailjet

Marketing & transactional

SMTP2GO

Transactional email

SparkPost

Transactional & bulk

Mandrill (Mailchimp Transactional)

Transactional email

Zoho Mail

Business email

MailerSend

Transactional email

Elastic Email

Marketing & transactional

Resend

Transactional email (developers)

ActiveCampaign

Marketing automation

Constant Contact

Marketing email

GetResponse

Marketing email

Cold email tools

Instantly

Custom tracking domain, SPF, DKIM, DMARC

Smartlead

Custom tracking domain, SPF, DKIM, DMARC

lemlist

Custom tracking domain, SPF, DKIM, DMARC

Google Workspace secondary domains

DKIM for every sending domain

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