Bypass Domain Reputation Issues with Pre‑Warmed SMTP Mailboxes

Cold email deliverability collapses when you rely on shared pools from traditional outreach platforms. One bad sender can poison the domain reputation and push your campaigns straight into spam.

Floy gives you fully warmed, isolated mailboxes on premium providers (Google Workspace, Fastmail, ProtonMail) — each with its own domain, DNS alignment, and multi‑week warm-up cycle.

You get instant sending, stable inbox placement, and complete control over your outbound infrastructure.

🔥 Instantly Deploy Warmed SMTP Mailboxes

Skip the 4–8 week warm-up delay. Every mailbox comes pre‑trained, pre‑warmed, and ready to send safely from day one.

Google Workspace: $45 Fastmail: $40 ProtonMail: $30

Each Mailbox Includes:

  • New domain with Full DNS setup (SPF, DKIM, DMARC)
  • 4–8 week warm-up on clean shared IP pools
  • 150 emails/day safe sending limits
  • Sandbox testing (3 emails/day before you buy)
  • Replacement only for technical issues
View SMTP Shop

1. Why Our Warmed Mailboxes Perform Better

2. Outperforming Traditional Shared Relays

Most outreach platforms use shared domains and shared pools, causing sudden spam spikes, random throttling, compliance pauses, and reputation contamination. Floy solves this by giving you:

  1. Dedicated Mailbox Reputation: Your domain and mailbox reputation belong only to you — absolutely no noisy neighbors dragging down your score.
  2. Full DNS Alignment: Every mailbox is delivered with perfect alignment, including custom routing, SPF, DKIM, and strict DMARC policies.
  3. B2B Optimization: Our warmed mailboxes are engineered to pass strict corporate inbound filters on Google Workspace, Microsoft 365, and enterprise firewalls.

🚀 Browse the SMTP Shop

Choose from our active pool of fully warmed mailboxes or reserve a slot from our background warming cluster.

View SMTP Shop

3. Frequently Asked Questions

What makes a pre‑warmed mailbox better than a cold domain?
Cold domains trigger filters instantly. Our warm-up engine simulates natural conversations over several weeks, building sender trust long before you launch your first campaign.
Can I connect these SMTP mailboxes to external tools?
Yes. You receive universal SMTP credentials compatible with Smartlead, Instantly, Apollo, Lemlist, custom backends, or any other standard outreach platform.
How do you handle background warming?
We maintain a continuous rotation of domains undergoing warm-up. When you need more capacity, you can deploy a verified mailbox instantly instead of waiting weeks.