Definition
A secondary domain is a lookalike or variant of your primary domain used exclusively for cold outbound, so any deliverability damage is isolated.
Why it matters
Never send cold email from your primary domain. If it gets flagged, your entire company's transactional and one to one email breaks.
How it works
- Buy 2 to 20 lookalike domains (yourbrandhq.com, tryyourbrand.io, etc)
- Point MX and DNS at Google Workspace or Microsoft 365
- Create 2 to 3 mailboxes per domain
- Warm and use only for cold outreach
Want us to run this for you?
Lead Engine builds outbound engines for B2B teams. Cold calling, cold email, and appointment setting, run by US based reps.