Tired of Warming Up Inboxes One by One?
I know how frustrating it is, especially when you’re doing it for scale.
Spinning up new domains and new accounts… running warm-up cycles… watching inboxes slowly build reputation before you could even send a single cold email. Warming up new accounts individually can be a major bottleneck, but with pre-warmed email accounts, you can launch campaigns immediately without waiting for reputation to build.
The worst part is, if you mess up even one DNS record, your outreach flops.
That’s why most cold email marketers use pre-warmed email accounts, ones that are already trusted, already sending, and ready to plug into your favorite tools like Salesforge, Smartlead, or Instantly.
In this guide, I’ll show you:
Whether you’re launching a campaign tomorrow or scaling to 10K+ contacts a month, this blog gives you the shortcut.
Let’s make outreach faster (and inboxes warmer).
Pre-warmed email accounts are inboxes (like Gmail or Outlook) that have already been used to send and receive emails in a natural, human-like way before you get them. This is part of a deliberate warm up process designed to build sender reputation and improve deliverability.
That makes them look trustworthy to inbox providers like Gmail or Outlook.
So instead of starting cold and risking the spam folder, you get an inbox that’s already warmed up and ready to send cold emails safely from day one.
There are two main options when it comes to warming emails:
Pre-warmed sellers save you time and effort.
Warm-up tools give you more control but need patience and setup.
Choosing pre-warmed account sellers can make a big difference in how quickly and effectively you can start your outreach campaigns.
Not all pre-warmed email accounts are created equal. Some are clean and ready to go. Others? Risky and rushed.
There are several key factors to consider when choosing a pre-warmed email account provider. Use this quick checklist before purchasing any pre-warmed inbox:
Choose based on your needs:
Here are the 5 best pre warmed domain providers that sell pre-warmed email accounts for fast, safe outreach.
Each provider offers a range of services, including reputation management, deliverability support, proactive monitoring, and automation features. Their services ensure your accounts are ready to use out of the box, with warm-up history, clean setup, and features built to help you start sending without landing in spam.
Let's break each of them down clearly
If you’re looking for pre-warmed email accounts that are fully set up and safe to send from on Day 1, Infraforge is one of the best choices out there for users who want to launch campaigns quickly without setup delays.
Unlike typical warm-up tools, Infraforge gives you both the infrastructure and the pre-warmed inboxes, so you don’t need to worry about DNS records, warm-up delays, or technical headaches.
The setup is designed to maximize email deliverability and boost deliverability rates for cold outreach, ensuring your emails land in inboxes, not spam folders.

Infraforge offers both per-inbox and bulk pricing.

Domains
Mailboxes
Each slot lets you delete or recreate inboxes as needed; you're not charged per email address, just the total number of slots.
If you require custom or bulk pricing, please contact our sales team for a personalized quote tailored to your business needs.
What’s Included
Every subscription comes with:
Add-Ons
Mailbox Slots:
Buy more slots to scale without worrying about limits.
SSL & Domain Masking:
Secure your redirects and hide your core domain from public view.
IP Addresses:
Need custom IPs for large-scale sending?
Masterbox View:
Monitor all emails from all accounts in one clean dashboard.
⚠️ Prices may vary based on inbox type, volume, and region.
All inboxes come pre-warmed and are tested for deliverability before handoff.
Infraforge lets you choose inboxes based on region:
This ensures better inbox placement, especially if you’re targeting leads in a specific country. By using region-matched accounts, your emails land directly in recipients' inboxes, improving deliverability and increasing the chances that your emails land where they matter most.
If you're tired of the warm-up wait, Infraforge gives you reliable, clean pre-warmed email accounts that are ready to scale with your outreach.
Whether you're sending 100 or 5,000 emails a week, this setup lets you focus on results, not deliverability problems.
If you want fully warmed email accounts but are exploring other options, Instantly.ai is worth checking out.
It’s ready-to-send U.S. IP Google accounts. You can start sending emails immediately from pre-warmed accounts, ensuring your campaigns begin without delay. They give you fully warmed inboxes with SPF, DKIM, and DMARC already set up.
These accounts are designed to launch cold email campaigns from day one, so you can send emails right away without waiting for a warm-up period. This allows for effective sending emails practices, improving deliverability and inbox placement.

It is focused on U.S IP-based accounts, which is ideal if your leads are primarily in North America.
For anyone targeting American prospects, this means better inbox placement and fewer spam-related delays.

Growth – $42.30/month
Supersonic – $87.30/month
Hyper – $177.30/month
Enterprise – Custom Pricing
Note: Pricing may vary based on volume and specific package features.
Instantly focuses primarily on U.S.-based IP warming, making it ideal for campaigns targeting:
They do not currently offer EU or UK IP‑matched inboxes, so it’s not best for European or APAC outreach.
If your cold email focus is on North America and you need pre-warmed email accounts that are ready to go immediately, Instantly.ai is a reliable option.
You get clean U.S.-based Gmail inboxes with all authentication in place and minimal setup required.
Just a heads-up, it's not region-flexible like some other tools. If you're targeting Europe, UK, or APAC, stick with providers offering geo-specific accounts (e.g,. Infraforge or Warmdoso).
If you’re looking to launch large-scale cold email campaigns without delay, Superwave.ai is a solid option.
It offers fully managed infrastructure and true pre-warmed email accounts, designed to let you start sending immediately, even at scale. Superwave.ai is built to efficiently handle large volumes of email, making it ideal for enterprise-scale campaigns.

Most impressive thing is their messaging: “no account warm‑up needed.”
They support mass outreach from the first day, with a strong backend for bounce management and domain rotation.
Superwave supports global outreach with strong geo flexibility:
You get reliable inboxing even if you're sending across multiple continents.
If you're planning to send cold emails at scale and need pre-warmed email accounts that can keep up with volume, Superwave.ai is one of the strongest options.
You get warm inboxes, dedicated IPs, regional support, and infrastructure that scales with your growth.
If you're targeting multiple regions or need enterprise-grade throughput, this tool is worth serious consideration.
If you need pre-warmed Gmail or Outlook Email accounts with full transparency, Mailscale is worth a look.
Mailscale provides ready-to-use Gmail and Outlook inboxes that are pre-warmed and come with SPF, DKIM, and DMARC set up. The platform features an optimized email sending infrastructure, including correct SMTP configuration and dedicated IP management, to maximize deliverability and ensure your emails reach inboxes.
The inboxes are optimized for US and international deliverability, ideal for global campaigns.


🔹 Monthly Billing – $149/month
🔹 Yearly Billing – $119/month (paid annually)
Perfect for: teams booking 10–30 calls per month, contacting ~10,000 leads.
What’s included:
And there is a 7-day free trial.
If you're scaling fast and want bulk Gmail inboxes that are pre-warmed, Mailscale is one of the few tools that delivers exactly that, without overcomplicating things.
You get a working setup, decent support, and inboxes that integrate directly into your favorite tools.
If you’re looking for a pre-warmed Email account for Google Workspace on fresh .com domains, Email Astra is a solid pick. Their setup is focused on ensuring emails land in the inbox, not spam.
It’s one of the few platforms offering fully warmed Google Workspace inboxes on fresh, brandable .com domains, already configured with proper DNS and ready to plug into your outreach tools. This configuration is designed to maximize the chances that your emails land in the inbox.

Email Astra is ideal for cold emailers who want plug-and-play warm inboxes without breaking the bank.

✅ Both plans include:
If you’re running lean campaigns or starting fresh, Email Astra gives you warmed inboxes fast, at one of the lowest prices around.
If you're looking for brandable inboxes with zero setup hassle, Email Astra makes it easy.
You get fresh domains, pre-warmed emails, and instant access to real outreach, without needing to touch DNS or warm up yourself.
It’s a solid choice if you're serious about sender reputation from day one.
Many people assume that tools like Lemwarm, Mailreach, or Warmforge sell ready-to-use inboxes.
That's not accurate; they are tools to warm up your existing inboxes, not providers of pre‑warmed email accounts.
Here's a clear breakdown:
These warm-up platforms are ideal if you:
Before you buy any pre-warmed email account, watch for these common red flags.
Here's a quick table to help you spot issues and what to do instead:
While testing and reviewing different pre-warmed email account sellers, I ran into a few common traps.
Here’s a quick table to help you spot and avoid them before they cost you inbox placement.
Quick Tip:
Don’t rush. A 2-minute check can save you weeks of email issues later.
One of the first questions I had when starting out was: How many pre-warmed email accounts do I really need to send safely without triggering spam filters? It’s also important to consider how many emails you can safely send from each account, as exceeding recommended limits can lead to deliverability issues.
Here’s what I’ve learned after working with different inbox providers and cold email tools. When scaling, gradually increasing your sending volume is essential for optimal results and helps avoid spam filters.
More emails = more warmed inboxes.
The key is to spread your volume, not blast from one inbox.
If you’re managing lots of inboxes, you’ll want smart rotation to stay clean.
You can pair your inboxes with tools like:
Or if you want pre-warmed inboxes + scaling handled for you
Infraforge offers bulk inbox packages, full warm-up history, and infrastructure built for volume.
That means less manual setup and fewer deliverability problems as you grow.
Quick Tip:
Start with 3–5 inboxes, test deliverability, then scale up gradually.
With Infraforge, you can request more inboxes anytime without waiting weeks for warm-up.
With so many options out there, picking the right provider depends on what stage you're at and how fast you want to move.
After comparing everything, setup time, inbox quality, region support, and flexibility, here's a simple breakdown to help you decide:
Ready to Skip the Warm-Up Wait?
If you're launching cold outreach and don't want to waste time on setup,
Infraforge gives you pre-warmed inboxes with clean delivery, fast handover, and results you can count on.
Try Infraforge and start sending the right way from Day 1.