Cold email inboxes, set up fast and monitored for you.

Google & Microsoft inboxes, fully and automatically setup for you in hours, ran by real cold email agency owners who actually answer when you need them.

Directly integrated with:

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...and more.

Get started in minutes

Using our most cost-effective setup: Microsoft inboxes. Send 1k emails/day for as little as $200/mo without worrying about DNS, deliverability, or anything technical.

Domains
Setup
Checkout
Sequencer setupafter payment · ~2 min

When do you want to start sending?

Same 100 Microsoft inboxes per domain. The difference is when you can start.

Whiteglove setup · deliverability monitoring with auto-swap · cancel any month.

How it works

We don’t just sell inboxes. We monitor your deliverability daily and consult you before spam costs you opportunities.

Slicey is a cold email inbox provider that also manages your deliverability: we check reply and bounce rates on every domain daily, and a deliverability consultant flags problems in your Slack channel and swaps burned domains on your go.

Pick your volume. We build the rest.

  • Choose how many prospects a day, and when you want to start
  • We handle the domains, SPF, DKIM, DMARC and your sequencer
  • Pre-warmed domains send today, new ones after a two-week warmup
Build your setup

Unlimited domain swaps included. Cancel any month.

You choose2 questions
Prospects a day3,000
Start sendingToday, pre-warmed
We build10 domains · 1,000 inboxes
getacme.com · 1 of 10Live
SPFv=spf1 include:spf.protection.outlook.com -allVerified
DKIMselector1._domainkey CNAME selector1-getacme-com._domainkeyVerified
DMARCv=DMARC1; p=quarantine; rua=mailto:[email protected]Verified
MXgetacme-com.mail.protection.outlook.comVerified
Inboxes100 / 100 created
SequencerConnected to your sequencer

Trusted by those you trust.

Yaro Yashnyk video testimonial
Sending Power10M/month
“I cannot recommend Slicey enough; These folks are amazing. Whenever we need them they deliver even the most complex and custom projects for us with unmatched inbox stability and very good deliverability. Our own clients are happy about us working with Slicey. The inboxes are always up to standard and communication is top notch. We enjoy working with them on a daily basis.”
Yaro Yashnyk
Yaro Yashnyk
CEO of Plusvibe.ai
Sending Power1.5M/month
“We have been using Slicey for two years now. We have not seen performance as well as Slicey's infra, and we've tested at least 4 vendors. Reply rate is now 6%, positive reply rate is 40%. We never had to switch infra which says something on its own...if you're looking to double down on your infrastructure and ramp up which we just did by buying 5000 more inboxes, or if you're looking to diversify vendors, definitely jump onboard with Slicey. Karim will make sure you're well taken care of.”
Dan Brown
Dan Brown
Founder of leadnavigator.ai
Sending Power2.1M/month
“We have over 14k inboxes with Slicey and have booked hundreds of meetings with them. They have been putting a lot of care and attention into their product and services. Constantly innovating. Overall has been a great experience working with them and I'd highly recommend working with them.”
Nicholas Tanabe
Nicholas Tanabe
Founder of Alphalead
Sending Power240K/month
“Slicey has always been there for us when deliverability has hit the fan. Reply rates jump once we use their pre-warmed, aged inboxes. They have been a Godsend for us, they always save the day. Slicey's Azure for sure, you won't be disappointed.”
Naufal Nugroho
Naufal Nugroho
GTM Engineering Lead at Dualentry.com
“Slicey is doing really amazing things. Preferred inbox vendor with a known track record of good business ethics + great customer support”
Cody Smith
Cody Smith
Founder of Emailguard.io / EmailBison.com
“I've used slicey for a couple years now, Karim is a solid guy, very very knowledgeable. When Deliverability was such a challenge this summer, his inboxes had the best results getting into inboxes”
Stuart Brent
Stuart Brent
Founder of SaasyDB.com
“Working with Slicey has been great for our start-up. Karim is a very forward thinking individual and goes above and beyond the cost of the service. We are sending a large number of emails per day and getting interest in our service is improving every day. They are thorough and focused on your success even if that means them repeatedly messaging you to get something to help your business, we are making sales and are making profit in just weeks. Thank you Slicey! Highly recommend!”
David Leoncavallo
David Leoncavallo
Founder of scaperelaxation.com
“Now have 15k Inboxes with Slicey. Before Slicey, I used to pray to book 15 calls/month. Now if I book 15 a week, I have a mental breakdown.”
Adrian Reyes
Adrian Reyes
Growth Partner at magnasummitllc.com
“I vouch for Slicey! (175+ Replies, 95 positive. $300k pipeline for a client)”
Luis Machado
Luis Machado
Founder of acquiropartners.com
“The campaign I'm running in bison with Slicey infra is the best performance from a campaign that I've ever seen and I've run thousands of campaigns and sent tens of millions of emails. I don't want to recommend this because i don't want others to know about it.”
Hollis Cameron
Hollis Cameron
Co-Founder of actionhero.marketing
“SEVEN TIMES THE REPLY OF INSTANTLY'S INFRASTRACTURE (3.5% vs 0.5%) NO WARMUP”
Alex Loughlin
Alex Loughlin
Co-Founder & CEO of Altbound.com
“Slicey suite is goated. Karim is the GOAT when it comes to Emails/Infra, would highly recommend if you have any needs in that area.”
LiamYek
LiamYek
Founder of Emtoss.com
“Legend! - I'm gonna use all 1k inboxes for months”
Harry Alnaimi
Harry Alnaimi
Founder of Demandmeetings.com
“You guys are actually insane”
Khash
Khash
Co-founder of Nextcallagent.io
“Slicey is the backbone of Caeros. Better than superwave.”
Hamza T
Hamza T
CEO of caeros.com
“Onboarding more of our clients to Slicey”
Frank Berefsky
Frank Berefsky
Co-Founder & CMO of brandvault360.com
“Inboxes are performing despite having skipped warmup!”
Wouter Harink
Wouter Harink
Founder & CEO of genflowsagency.com
“I don't know anyone better than Slicey for infra”
Aleksandar Plavljanic
Aleksandar Plavljanic
TalentHaul.com

We’re here to help

Anything unclear? Reach out through WhatsApp for or book a call.

How are we different?

Can I skip warmup?

Why 49-99 inboxes/domain instead of 3?

What sequencer can I use?

Is this a Custom SMTP server?

Do you do custom plans?

Let’s talk about your next big move

Hop on a call with us to see how our services can accelerate your growth.

From the blog

Deliverability deep dives and outbound playbooks, backed by 5M+ cold email sends a month.