Mailchimp: Authenticate sending domain (SPF/DKIM/DMARC)
3 walk-throughs of this task.
9:111:42Authenticate a custom domain in MailchimpWalks through the domain authentication process using the Entri integration to verify a custom domain for better deliverability.@KevinStratvert
10:230:46Authenticate your sending domain in MailchimpShows the navigation to account settings and the domain section to start the authentication process to improve deliverability.@KevinStratvert
2:151:47Verify and Authenticate Sending DomainsStep-by-step guide on adding a domain, verifying it via email or DNS, and configuring DKIM and DMARC records within the Mailchimp Transactional interface.@mailchimp

Klaviyo
Beehiiv
Kit
ActiveCampaign