Buy Mailboxes in Bulk for Cold Email
Provision hundreds of dedicated-IP Office 365 mailboxes at the industry's lowest price — $2/mailbox on the Enterprise / Agency plan, delivered within 24 hours.
Bulk capacity & pricing at a glance
Each mailbox safely sends ~50 cold emails/day. Keep to ~3 mailboxes per domain to protect deliverability.
| Mailboxes | Domains needed | Safe sending capacity | From / month (annual) |
|---|---|---|---|
| 50 | ~17 domains | ~2,500/day | $100/mo |
| 100 | ~34 domains | ~5,000/day | $200/mo |
| 250 | ~84 domains | ~12,500/day | $500/mo |
| 500 | ~167 domains | ~25,000/day | $1,000/mo |
| 1000 | ~334 domains | ~50,000/day | $2,000/mo |
Bulk provisioning
Order 250–1000 mailboxes in one go, each isolated on its own IP and fully authenticated before handover.
Priority 24-hour delivery
Agency and enterprise orders are fast-tracked — 98% delivered within one business day.
Full admin control
Complete admin-console access across every mailbox, plus custom tracking domains for your clients.
Provision your bulk order in 24 hours
Dedicated-IP Office 365 mailboxes, live in 24 hours, from $2/mailbox.
Get started →Frequently asked questions
How low does bulk pricing go?
On the Enterprise / Agency plan (251–1000 mailboxes) pricing is $2/mailbox/month on annual billing — the industry's lowest.
How many domains do I need for 500 mailboxes?
Plan for roughly 167 domains — keep it to about 3 mailboxes per domain to protect deliverability.
Can agencies resell these to clients?
Yes. You get full admin access and custom tracking domains, and our affiliate/partner program supports agencies reselling inboxes.
How fast is a bulk order delivered?
Bulk orders are prioritised, with 98% of mailboxes live within 24 hours of domain verification.