#196 · I'm Buying A $5M Business
You can buy domains directly inside Zapmail or bring your own existing ones. With ten mailboxes you’re limited to 30 emails per day total, not 30 per niche. That works out to 10 emails per day per niche per mailbox, so you won’t damage your sender reputation.
You can send up to 30 emails per day per mailbox in total. That limit isn’t per niche; it’s 30 per day for the mailbox. With three niches you’d average about 10 emails per day per niche per mailbox, which keeps reputation safe.
No, the 9‑to‑12 mailboxes and three sending domains are fine for all of your niches. You can use the same infrastructure across the board.
The creator recommends starting with 9‑12 mailboxes, which works out to roughly 30 emails per mailbox per day (270‑360 total). He suggests using about one domain for every three mailboxes, so 9‑12 mailboxes translates to 3‑4 domains. Domain registration costs around $5‑$10 each, and mailbox costs vary by provider—he mentions a 10% discount for Zapmail with code NYX. These are beginner guidelines from Maker School; you can increase volume if you’re not limited by resources.
With Instantly, pre‑warmed mailboxes run about $10 each and typically require 5‑6 domains for 15‑20 mailboxes. Warming up yourself with services like Zapmail costs roughly $3‑4 per mailbox per month, takes 2‑3 weeks to warm, and yields comparable daily sending volume (≈200‑1,000 emails/day).