Icemail SMTP Mailboxes give you dedicated IP infrastructure per domain, designed for teams who need reliable, high-volume cold email sending with full control over their sending environment.
Dedicated IP per domain for maximum deliverability control
Up to 10 mailboxes per domain
Daily Sending Limit: Up to 50 emails/day per mailbox
Warmup: 15 warmup emails/day per mailbox (1:1 ratio with cold outreach)
Automated DNS, DKIM, DMARC, and SPF configuration
Follow the 1:1 warmup-to-outreach ratio for best deliverability:
| Activity | Emails/Day/Mailbox | | --- | --- | | Cold Outreach | 15 | | Warmup | 15 | | Total | 50 max |
Parallel warmup is always recommended. Run warmup and cold outreach simultaneously in equal portions.
Each domain gets a dedicated IP address
Configure up to 10 mailboxes per domain
DNS records (DKIM, DMARC, SPF) are set up automatically
SMTP Mailboxes are ideal for:
Experienced senders who want dedicated IP control
Teams that need higher per-mailbox sending volume (up to 50 emails/day)
Agencies requiring isolated sending infrastructure per domain
Contact our team for current SMTP pricing at **[email protected]** or use the in-app chat widget.
Reach out to us at **[email protected]** — our team is ready to help you get started with SMTP mailboxes.
