Add the DNS records

Email authentication needs three record types on your sending domain: SPF, DKIM and DMARC. The platform generates the exact values — add them at your DNS host, then run the verification check. Propagation is usually minutes but can take up to 24 hours.

Use a subdomain for bulk sending

Send marketing email from a subdomain such as mail.yourdomain.com rather than your root domain. If a campaign ever damages reputation, it contains the impact and your day-to-day business email keeps delivering.

Warm up new domains

A brand new sending domain has no reputation. Ramp volume gradually over two to four weeks — start with your most engaged contacts, keep bounce rate under 2% and complaint rate under 0.1%, and increase volume only while those numbers hold.

Keep lists clean

Suppress hard bounces automatically, remove contacts with no opens in 180 days, and always include a working unsubscribe link. Deliverability is mostly a list-hygiene problem, not a content problem.