Cold email inboxes, set up fast and managed for you.
Google and Outlook inboxes, set up in hours and managed for you. Every domain fully isolated. No shared panels, no domino effect, no burned reputation.
49–99 inboxes per domain. You own your domains, always.
How Slicey works
We handle the infrastructure. You focus on closing deals.
Pick your domains
Choose how many domains you need. We set up each one with its own dedicated Microsoft account, credit card, proxy, and fingerprint.
We warm & isolate
Every domain is pre-warmed and completely isolated. No shared panels. No domino effect. If one dips, the others stay safe.
You send & close
Connect to your sending tool of choice and start booking meetings. We monitor deliverability and swap inboxes automatically if anything dips.
Built for deliverability.
Here's what that actually means.
Most inbox providers cram hundreds of customers onto shared panels. One bad sender burns everyone. We don't do that.
Every domain gets its own account
Your domains aren't sharing a panel with strangers who can burn your reputation. Each domain gets its own dedicated account, credit card, proxy, and browser fingerprint. Google and Outlook, completely isolated.
No domino effect
One burned domain can't take the others down. Each domain is completely sandboxed, so problems stay contained.
Free domain replacement
If a domain does get burned, we replace it for free. No questions asked. You're never stuck paying for dead infrastructure.
Real deliverability tracking & auto-swap
No fake warmup scores. We track actual inbox placement and automatically swap out underperforming inboxes before they affect your campaigns. White-glove setup and human expert support included.
What customers are saying
Real results from real cold email teams.
"SEVEN TIMES THE REPLY RATE OF INSTANTLY'S INFRASTRUCTURE. 3.5% vs 0.5%. No warmup."
"Before Slicey, I used to pray to book 15 calls a month. Now 15 a week causes a mental breakdown."
"175+ replies, 95 positive. $300k pipeline for a client. I vouch for Slicey."
"When deliverability was such a bitch this summer, his inboxes had the best results getting into inboxes. Very very knowledgeable."
"Best performance from a campaign. I've run thousands of campaigns and sent tens of millions of emails."
"Inboxes are performing despite having skipped warmup!"
Simple, per-domain pricing
No hidden fees. No shared panels. Every domain is fully isolated.
Scale up and down flexibly. Custom plans available.
- 49–99 inboxes per domain
- 15,000 emails/month per domain
- Per-domain isolation
- Pre-warmed & ready to send
- Deliverability tracking with autoswapping
- Unlimited domain swap
- 100% white-glove setup
- Campaign consultation
Frequently Asked Questions
Everything you need to know about Slicey.
What makes Slicey different from other inbox providers?
Most providers cram hundreds of customers' domains onto shared panels. One bad sender burns the whole panel. Slicey gives every domain its own dedicated account, credit card, proxy, and browser fingerprint. Google and Outlook, fully isolated. No domino effect.
How many inboxes do I get per domain?
Between 49 and 99 inboxes per domain, depending on your plan. The industry standard is 3–5 inboxes per domain, so you're getting 10–20x the sending capacity per domain.
Do I own my domains?
Yes, always. Your domains belong to you. If you leave Slicey, you take your domains with you. No lock-in.
What happens if a domain gets burned?
We replace it for free. No questions asked. Because each domain is isolated, a burned domain can't affect your other domains either.
What sending platforms does Slicey work with?
Slicey is directly integrated with Clay, Instantly, Plusvibe, and more. Our inboxes work with any cold email tool that supports Google or Microsoft inboxes. We provide the infrastructure; you choose the sending platform.
How does the warmup process work?
We handle warmup before you ever touch the inbox. Your domains are pre-warmed with real engagement patterns, not fake warmup loops. We track actual deliverability metrics, not inflated warmup scores.
Is there a setup fee or long-term contract?
No setup fees and no long-term contracts. White-glove setup is included at no extra cost. Our team handles the technical configuration so you can start sending fast.
Stop losing deals to spam folders.
Google and Outlook inboxes that actually land. Every domain isolated on its own account.