5 Best Prewarmed Google Workspace/Gsuite Mailboxes (2025)

If you're tired of setting up Google Workspace inboxes, configuring SPF and DKIM, waiting 3 weeks to warm them up, only to land in spam anyway, this list is for you.

We tested providers that actually give you pre-warmed Google Workspace or Gmail inboxes, with real sending history, working DNS, and zero setup delays.

Here are the 5 best pre-warmed mailbox providers if you want to launch cold email campaigns today.

5 Best Pre-Warmed Google Workspace/G Suite Mailboxes: Quick Look

1. Infraforge – Pre-warmed Gmail and custom-domain Google Workspace inboxes with fast setup, clean domains, and full DNS configuration.
   
   
2. Instantly – Ready-to-use pre-warmed Gmail accounts built for bulk sending and quick scaling.
   
   
3. Zapmail – Pre-warmed Gmail/Workspace inboxes with long warm-up history and smooth CRM/tool integrations.
   
   
4. Email Astra – Affordable pre-warmed Google Workspace mailboxes on fresh .com domains, ideal for small teams.
   
   
5. Mailscale – Pre-warmed Gmail inboxes you can rent in bulk for fast outreach without managing domains.
   

What Are Pre-Warmed Google Workspace/G Suite Mailboxes?

Pre-warmed Google Workspace or G Suite mailboxes are email accounts that already have a sending history before you use them. 

Instead of starting from a brand-new inbox with zero reputation, you get an inbox that has already been sending and receiving emails in a natural, safe way.

This warm-up activity tells Google that the mailbox is real, trusted, and not a spam source. 

It also means the DNS settings, SPF, DKIM, and DMARC, are already configured correctly, so you don’t need to handle the technical setup.

In simple words, a pre-warmed Google Workspace inbox is ready to send cold emails on day one without going to spam.

How We Chose the Best Pre-Warmed Google Workspace Providers

Not every seller who claims to offer "pre-warmed inboxes" is worth trusting.

Some use low-quality domains, skip proper setup, or warm inboxes too fast, which leads to spam issues later.

To help you avoid all that, we picked these 5 providers based on what really matters for cold email success:

• Real warm-up history: Each inbox should have been sending and receiving emails for days or weeks, not just created yesterday.
  
  
• Correct DNS setup: SPF, DKIM, and DMARC must be properly configured, or your emails will still land in spam.
  
  
• Google Workspace or Gmail support: We focused only on providers offering Google-based inboxes, not Outlook-only sellers.
  
  
• Fast setup: The inbox should be ready within minutes or hours, not take days to activate.
  
  
• Clean domains and IPs: There should be no recycled or flagged domains. We looked for inboxes built on fresh, clean infrastructure.
  
  
• Tool compatibility: The inboxes should work smoothly with tools like Instantly, Smartlead, or Lemlist.
  
  
• Good pricing for scale: Whether you need 5 inboxes or 50, pricing should be worth it, especially for agencies or founders running volume campaigns.
  

5 Best Prewarmed Google Workspace/Gsuite Mailboxes: Quick Comparison 

1. Infraforge – Best for Reliable Gmail & Custom Domain Pre-Warmed Accounts

Infraforge is a pre-warmed email infrastructure tool built specifically for cold outreach. 

It gives you pre-warmed Google Workspace/Gmail inboxes and custom-domain mailboxes that are ready to send from the first day. 

Infraforge handles domains, DNS setup, warm-up, dedicated IPs, inbox creation, and deliverability monitoring automatically .

The system configures everything using best practices and gets your new inboxes live in about 5 minutes. 

Because Infraforge uses dedicated IPs and a private infrastructure, it delivers much better inbox placement compared to regular Google Workspace or Outlook.

Key Features of Infraforge:

• Infraforge automatically sets up SPF, DKIM, and DMARC for every domain, which removes all technical work and ensures your emails pass authentication checks for better inbox placement.
  
  
• It provides pre-warmed Gmail and custom-domain mailboxes, so you can start sending cold emails immediately without waiting weeks for warm-up.

• Each user gets a dedicated IP address, which improves sender reputation and prevents other senders from affecting your deliverability.
  
  
• The bulk domain generator creates several domains in one click, helping you scale outreach quickly without manually registering domains.
  
  
• The mailbox auto-generator builds multiple inboxes at once, saving time for teams that need dozens of accounts for high-volume sending.
  
  
• Infraforge includes domain masking and SSL redirection, which protects your core brand domain and keeps your links safe and trusted.

Pros & Cons of Infraforge:

Infraforge Pricing

• Domains: $14/year per .com
  
  
• Mailboxes (slots):
  
  
  • $4/month per mailbox (yearly billing)
    
    
  • or $17/month (yearly)
    
    
  • or $20/month (quarterly)
    
    
• Minimum purchase: 10 mailbox slots
  
  
• Optional add-ons:
  
  
  • SSL + domain masking → $6/year per domain
    
    
  • Extra IPs → $99/month
    
    
  • Masterbox dashboard → $7/month
    

You pay for mailbox slots, not each active inbox, you can delete and recreate inboxes as needed.

Best For:

• Agencies that manage multiple domains/inboxes
  
  
• Teams sending high-volume cold email
  
  
• People wanting done-for-you DNS + warm-up
  
  
• Users who need custom-domain inboxes
  
  
• Anyone who wants stable, long-term deliverability
  

2. Instantly – Best for Bulk Pre-Warmed Google Workspace Accounts 

Instantly is a cold email and lead-generation platform that also provides pre-warmed Google Workspace/Gmail sending accounts.

The service sets up Google accounts for you, configures SPF, DKIM, DMARC, uses US IPs, and delivers inboxes that are ready to send within 24–72 hours.

Instantly includes powerful outreach features like unlimited warmup, unlimited sending accounts, AI-assisted writing, a built-in B2B lead database, and a unified inbox.

Key Features of Instantly:

• Instantly sets up all DNS records for you, so your new Google mailbox is authenticated and ready to land in inboxes.
  
  
• These accounts come from trusted US IP ranges, which improves inbox placement and reduces spam filtering.
  
  
• Your emails get opened and replied to by real accounts in Instantly’s warmup network, which steadily builds domain reputation.
  
  
• All responses from all your mailboxes show up inside one inbox, making follow-ups fast and preventing missed leads.
  
  
• Instantly automatically tags replies as Interested, Not Interested, Follow-Up, etc., so you don’t waste time sorting emails.

Pros and Cons of Instantly

Instantly Pricing

I. Growth – $37/month

• Unlimited email accounts
  
  
• Unlimited warmup
  
  
• 1,000 uploaded contacts
  
  
• 5,000 emails/month
  

II. Hypergrowth – $97/month

• Unlimited email accounts
  
  
• Unlimited warmup
  
  
• 25,000 contacts
  
  
• 100,000 emails/month
  
  
• Priority support
  

III. Light Speed – $358/month

• 500,000 emails/month
  
  
• 100,000 contacts
  
  
• Includes IP rotation & SISR (Server + IP Sharding System)
  

IV. Pre-warmed domains and Google accounts are purchased separately. Delivered in 24–72 hours with:

• DNS setup done for you
  
  
• High-quality US IPs
  
  
• Warmup ready
  
  
• Bulk purchase options
  

Best For:

• Agencies scaling large cold email operations
  
  
• Teams that want both pre-warmed Google mailboxes and outreach system
  
  
• Users who want one tool for warmup, sending, analytics, inbox management
  

3. Zapmail – Best for Pre-Warmed Google Workspace Mailboxes With 12-Week Warm-Up 

Zapmail is a cold email infrastructure platform that provides pre-warmed Google Workspace and Microsoft 365 mailboxes that come with more than 12 weeks of warm-up history, clean domains, realistic sender profiles, and complete DNS authentication.

All mailboxes are hosted on US IPs, created automatically, and delivered with OAuth logi, meaning you can connect them to outreach tools in seconds without any manual setup.

Key Features of Zapmail:

• Pre-warmed Google Workspace mailboxes with 12+ weeks history. Each inbox comes with natural warm-up activity already done, helping your emails land in the inbox from day one without waiting.
  
  
• Mailboxes use US-based IP addresses, which improves domain reputation and increases inbox placement rates.
  
  
• Each domain gets its own private workspace with admin access, reducing ban risk and preventing cross-account reputation issues.
  
  
• You can purchase new domains inside Zapmail or connect your own domain, making it easy to scale while keeping control.
  
  
• Tools like Instant Domain Genie and Smart Mailbox Namer help you create brand-ready domains and clean mailbox handles instantly.

Pros and Cons of Zapmail 

Zapmail Pricing

I. Google Workspace Plans

• Starter – $39/mo → 10 mailboxes, extra $3.50 each
  
  
• Growth – $99/mo → 30 mailboxes, extra $3.25 each
  
  
• Pro – $299/mo → 100 mailboxes, extra $3.00 each

II. Pre-Warmed Mailboxes

• Starter – $24/mo renew → 3 pre-warmed mailboxes, extra $8 each
  
  
• Growth – $84/mo renew → 12 pre-warmed mailboxes, extra $7 each
  
  
• Pro – $180/mo renew → 30 pre-warmed mailboxes, extra $6 each
  

III. Domains: $15/year. All accounts hosted on US/EU IPs

Best For:

• Teams wanting pre-warmed Google Workspace inboxes with 12+ weeks history
  
  
• Agencies managing many domains and clients
  
  
• Users who want fast OAuth integration with outreach tools
  

5 Zapmail Alternatives & Competitors Used By Top Consultants

4. Email Astra – Best Budget-Friendly Pre-Warmed Google Workspace Mailboxes

Email Astra is a simple and affordable service that gives you pre-warmed Google Workspace mailboxes so you can start cold emailing immediately, without waiting 14+ days for warm-up.

The accounts come with a fresh .com domain, full Google admin ownership, and all DNS records already set up.

Email Astra is mainly used by solo cold emailers, small agencies, and startups who want a fast, low-cost way to get sending-ready Google Workspace inboxes.

Key Features of Email Astra:

• Instant activation of pre-warmed Google Workspace accounts. You receive your inboxes within minutes, letting you start cold emailing right away instead of waiting for warm-up cycles.
  
  
• Every purchase includes a new .com domain, giving you clean sender reputation and better inbox placement.
  
  
• MX, SPF, DKIM, and DMARC are already set up. All authentication records are configured for you, so your emails pass trust signals and avoid spam filters.
  
  
• You can plug Email Astra inboxes into any outreach platform without extra setup.
  

Pros and Cons of Email Astra

Email Astra Pricing

I. Google Workspace Pre-Warmed Mailboxes

Minimum 6 mailboxes required.

• Monthly Plan: $10/month per mailbox
  
  
• 3-Month Plan: $8/month per mailbox
  
  
• 4-Month Plan: $7.5/month per mailbox
  

Included in Every Plan

• Pre-warmed Google Workspace mailbox
  
  
• Fresh .com domain
  
  
• Full Google Admin access
  
  
• Instant setup
  
  
• Works with any cold email tool
  
  
• Free setup assistance
  

II. Microsoft/Outlook Option

• $4/month per mailbox: Also includes free .com domain + instant setup

Best For:

• Cold email beginners who want an affordable starting point
  
  
• Startups launching outreach quickly
  
  
• Small agencies needing multiple sending domains
  
  
• Users who prefer fresh Google Workspace domains over rented inboxes
  

5. Mailscale — Best for Instant, Affordable Pre-Warmed Inboxes for High-Volume Cold Email

Mailscale is a cold email inbox generator designed for teams that need a large number of sending accounts quickly.

It creates inboxes automatically, configures all DNS records (SPF, DKIM, DMARC), and gives you a ready-to-import CSV so you can plug those inboxes into Instantly, Smartlead, Apollo, Reply.io, Lemlist, or any SMTP-compatible outreach tool.

Inbox creation takes only a few minutes, and the platform is far cheaper and faster than using Google Workspace or Outlook for bulk account creation.

Key Features of Mailscale:

• You can generate dozens or hundreds of inboxes in under a minute, helping you scale outreach without long setup processes.
  
  
• Mailscale handles all DNS and technical configuration for you, removing 12+ hours of manual work and ensuring emails pass authentication checks.
  
  
• You can purchase domains inside Mailscale for $10–$15/year (auto-configured) or connect your own domains through support.
  
  
• Every inbox comes with SMTP login details in a CSV file for one-click import into Instantly, Smartlead, Apollo, Lemlist, Reply.io, etc.
  
  
• Mailscale recommends up to 5 inboxes per domain, helping maintain reputation and avoid spam filtering at scale.
  

Pros and Cons of Mailscale 

Mailscale Pricing

• Starter Plan: $99/month for 20 pre-warmed inboxes (includes free domains and 5-minute setup).
  
  
• Custom plans available for larger teams.
  
  
• Deliverability guarantee: 95–100% inbox placement or refund/new domains provided.
  

Best For:

• High-volume B2B cold email teams
  
  
• Users who want instant inbox creation
  
  
• Founders, consultants, freelancers doing outbound
  
  
• Anyone wanting guaranteed deliverability with no tech setup
  

Which Pre-Warmed Google Workspace/Gsuite Mailboxes Should You Choose?

Choosing the right pre-warmed mailbox provider depends on what stage you’re at and how you plan to run your cold outreach.

• Want a reliable infrastructure built for scale with custom domains and clean inboxes? → Go with Infraforge.
  
  
• Need bulk Google mailboxes with fast delivery + outreach tools in one place? → Try Instantly.
  
  
• Looking for Gmail inboxes with deep warm-up history + strong domain/IP hygiene? → Consider Zapmail.
  
  
• Starting with a small team or need budget-friendly Gmail inboxes with quick setup? → Pick Email Astra.
  
  
• Want to generate 100+ inboxes fast for high-volume outreach and don’t mind shared IPs? → Use Mailscale.
  

If you want the most stable, reliable, and deliverability-optimized cold email infrastructure, start with Infraforge. 

It’s the top-rated platform for done-for-you warm-up, DNS, domain masking, and inbox creation at scale. 

Get started with Infraforge now.

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