Dedicated sending domains vs your main domain

Dedicated sending domains vs your main domain

Never send cold from your primary domain. The real choice is how you spread the secondaries.

Many cheap secondaries Pros:
— Risk is distributed; one burns, others survive
— Higher total daily volume
— Main brand domain stays clean

Many domains Cons:
— $10-12/domain/year plus DNS setup each
— Reputation spread thin, slower to build

Few aged domains Pros:
— Concentrated reputation, lands harder
— Less DNS overhead

Few domains Cons:
— One bad campaign torches your whole capacity
— Lower ceiling on volume

Verdict: Spread strategy 4.3/5 for agencies, concentrated 3.8/5 for solo senders.

Who it's for: Buy 3-5 lookalike domains (.co, .io, get-yourbrand) with 2-3 mailboxes each if you send 200+/day. Keep it to one or two secondaries under that. Either way, point them all at your main site with 301s and full SPF/DKIM/DMARC before sending a single email.