Buzz's AI Email Service has been completely rebuilt, and it delivers a lot better. You buy .com sending domains and create mailboxes inside Buzz, warm-up starts on its own, and after a 12-day warm-up each mailbox sends up to 25 emails a day from your campaigns. No outside domain provider, no manual mailbox setup, no separate warm-up tool.
If you've been searching for done-for-you cold email infrastructure, pre-warmed mailboxes, or a way to buy cold email domains and mailboxes without stitching together three vendors, this is that, built into the same platform that runs your email, LinkedIn, and call outreach.
What is the Buzz AI Email Service?
The AI Email Service lets you create and manage custom sending domains and mailboxes directly in Buzz. You pick domains that match your company name, Buzz can suggest names with AI, and each mailbox is warmed automatically to protect your sender reputation. It lives in the Mailboxes tab of your workspace and is available on the Core plan and higher.
The point is simple: keep cold email off your main company domain, and stop paying for separate domain, mailbox, and warm-up tools just to send a campaign.
What changed in the rebuild?
The service was rebuilt from the ground up, and the result is better delivery for the email you send from Buzz. Day to day, that means:
- Setup in a few clicks. Buy domains, create mailboxes, and attach them to a campaign without leaving Buzz.
- Warm-up that starts by itself. Once a mailbox exists, warming begins automatically. No extra setup and no lead list needed.
- Clear sending limits. A 12-day warm-up, then up to 25 emails a day per mailbox, with your own sending range inside that limit.
- One pool for the team. Domains are shared across the workspace, so several people can create mailboxes from the same domains.
- Works with what you already have. AI mailboxes sit alongside the mailboxes you've already connected.
How do you set up cold email domains in Buzz?
- Go to Mailboxes > Domains > Purchase Domain.
- Enter your main domain name (letters and digits only). Click Auto Generate with AI for suggestions, or type your own.
- Need more than one? Set the Number of Domains for mirror domains, or add them with + Add Another Domain.
- Click Next to review the domains and total, then Purchase.
Only .com domains are available right now. Each domain supports up to three mailboxes. You can also set a redirect URL so anyone who visits a sending domain lands on your real website. Full steps are in the help article AI Email Service Overview & Domain Setup.
How do you create warmed mailboxes?
In Active Mailboxes, click Create, then enter the sender's first and last name (what prospects see), the email prefix (the part before the @), and pick a domain. You'll see the mailbox price before you buy. Mailboxes are linked to the user who creates them, while domains are shared by the whole workspace. Details: Creating AI Mailboxes.
How does warm-up work?
Warm-up is turned on automatically for every AI Email Service mailbox. New mailboxes go through a 12-day warm-up, sending a controlled number of emails between mailboxes in the warming network to build trust with email providers. Those warm-up emails never go to your prospects, and their stats are tracked separately from your campaign sends.
After warm-up, each mailbox can send up to 25 emails a day, and you set the daily sending range inside that limit. To see warm-up stats, open the mailbox's three-dot menu and choose Manage. More in Email Warming & Using AI Mailboxes.
How do you use AI mailboxes in campaigns?
In a campaign's Send Email step, choose one or more AI mailboxes as senders. Or switch on Use All AI Email Service Mailboxes, and every AI mailbox on your account sends for that step, including ones you add later. Your regular connected mailboxes stay available under My Inboxes, so you can mix both.
Because it's all one campaign, email can run next to LinkedIn steps in the same sequence. See how to build a LinkedIn and email outreach sequence. You can also reply from an AI mailbox in the Buzz Inbox: open a conversation, click Emails, then Send email, and choose the mailbox.
One thing that surprises people: AI mailboxes send over SMTP, so sent emails don't show in the mailbox's own Sent folder. Check delivery in the prospect's Emails tab or the campaign activity in Buzz instead.
How many mailboxes and domains do you need?
Work backward from volume. Each mailbox sends up to 25 emails a day after warm-up, and each domain holds up to three mailboxes. So one domain with three mailboxes gives you up to 75 emails a day. Add domains and mailboxes to scale, and plan around the 12-day warm-up before a new mailbox starts sending campaigns.
Spreading sends across several domains also means one domain's reputation isn't carrying your whole program. For the basics of staying out of spam, read B2B outreach inbox placement and test your copy with the free cold email spam checker.
What about renewals?
Domains renew yearly. Turn on Auto-Renewal from the domain's Manage page so a domain, and the mailboxes on it, never lapse mid-campaign. With auto-renewal on, the charge runs 45 days before the expiry date. If a domain does expire, it enters a grace period where you can still renew it. See Domain Auto-Renewal. Mailbox purchases and renewals are non-refundable.
Bottom line
The rebuilt AI Email Service gives you sending domains, warmed mailboxes, and campaign sending in one place, and it delivers a lot better than before. Pair it with LinkedIn and call steps, or hand the whole loop to the AI Employee.
Start free on Buzz and open the Mailboxes tab to set up your first domain. Compare plans on the pricing page, or see everything email does on Buzz Email Outreach.
