If you're searching for Mailscale alternatives, the right choice depends on what you want to change: mailbox costs, infrastructure control, account type, warmup, or the number of tools your team manages.
Some providers specialize in SMTP infrastructure. Others supply real Google Workspace or Microsoft 365 accounts, dedicated email servers, or mailbox provisioning alongside campaign software. These are different products, even when they all advertise cold email infrastructure.
This guide compares seven options: LiteMail, Inframail, Infraforge, Maildoso, Mailforge, Zapmail, and Instantly. We'll look at pricing models, strengths, limitations, and the type of team each option suits.
Disclosure: LiteMail publishes this comparison and is one of the providers reviewed. We distinguish published product information from our recommendations. Prices and plan details can change, so confirm current terms before purchasing.
Quick answer: Which Mailscale alternative is best?
LiteMail — Best for: Teams that want managed Google Workspace or Microsoft 365 inboxes, with fresh and pre-warmed options.
Inframail — Best for: High-volume teams that prefer flat-rate, Microsoft-based infrastructure.
Infraforge — Best for: Teams that need private SMTP infrastructure and dedicated IP options.
Maildoso — Best for: Budget-conscious teams buying SMTP mailboxes at volume.
Mailforge — Best for: Teams that want shared SMTP infrastructure with automated provisioning.
Zapmail — Best for: Teams that want managed Google or Microsoft mailboxes with automated setup and pre-warmed options.
Instantly — Best for: Teams that want campaign software and mailbox purchasing within the same platform.
The short version: Choose your infrastructure model first. Then compare the complete monthly cost, warmup arrangements, account access, sending software, and cancellation terms.
What to know about Mailscale before switching
Mailscale's product positioning has evolved. Its current website promotes an AI-driven outbound platform that combines prospecting, AI-generated email variations, pre-warmed outreach domains, deliverability features, and reply assistance. Its Help Center also retains older pricing for email-account plans.
That distinction matters. If you're using a legacy Mailscale mailbox service, an infrastructure provider may be a relatively direct replacement. If you're using the newer outbound platform, replacing it with an infrastructure provider alone won't replace prospecting, campaign execution, or reply-management features.
The legacy Help Center lists these account limits:
Legacy plan reference | Monthly price | Included accounts |
Solopreneur | $79 | Up to 15 |
Business/Agency | $119 | Up to 50 |
Enterprise | $249 | Up to 200 |
The same Help Center lists an additional $1 per account beyond the Enterprise limit. These figures come from a Help Center article dated August 2024, so confirm whether they apply to your current Mailscale product and a new purchase before using them for a switching decision. See the Mailscale Help Center pricing explanation.
Why teams consider Mailscale alternatives
There isn't one reason every team switches. Usually, the decision comes down to one or more of the following.
1. The total cost of the setup
A mailbox price doesn't necessarily include domains, warmup, dedicated IPs, monitoring, or a sending platform. A cheaper SMTP inbox may cost less at checkout but require additional tools. A managed mailbox may cost more initially but reduce setup work.
Compare the cost of the complete stack, not just the advertised inbox rate. Our cold email tool pricing comparison explains how infrastructure, sending software, and prospecting data contribute to the total bill.
2. The mailbox type
SMTP infrastructure and real Google Workspace or Microsoft 365 accounts are not interchangeable in every workflow.
SMTP services can be economical and flexible. Native provider accounts may suit teams that specifically need Google or Microsoft account administration and authentication workflows. Neither model guarantees inbox placement.
3. Control over infrastructure
Some teams prefer shared infrastructure for its lower entry cost. Others want dedicated IPs, clearer separation between sending environments, or greater control over account administration.
Dedicated infrastructure is not automatically better for every sender. IP reputation still depends on sending practices, recipient engagement, list quality, and consistent volume.
4. Warmup and monitoring
Some services include warmup or monitoring; others charge separately or expect you to connect external tools. Before switching, determine whether you are paying for historical warmup, ongoing warmup, placement testing, or merely automated mailbox setup
1. LiteMail — Best for managed Google Workspace and Microsoft 365 inboxes
Overview
LiteMail provides managed Google Workspace and Microsoft 365 inboxes for outbound teams. It is worth considering if you want provider-based accounts without manually managing every provisioning and DNS step.
It offers both fresh and pre-warmed mailbox options, allowing buyers to choose between lower initial costs and inboxes with existing warmup history.
Best for: B2B sales teams, founders, and agencies that want managed inbox infrastructure while continuing to use a separate sending platform.
Pricing
LiteMail advertises fresh inbox pricing from $2.50 per inbox and pre-warmed options from $4.99 per inbox. Package totals, included domains, and extra-mailbox charges depend on the selected plan. Check the current LiteMail inbox plans before purchasing.
Pros
Google Workspace and Microsoft 365 options.
Fresh and pre-warmed choices for different budgets and timelines.
Automated DNS and authentication setup.
Designed to connect with established outreach platforms.
Lets teams choose mailbox infrastructure separately from campaign software.
Cons
A separate sending platform may still be necessary.
The appropriate option depends on your account requirements and warmup needs.
Package pricing and included services should be compared carefully with competitors.
How LiteMail can help
If your priority is managed Google Workspace or Microsoft 365 inboxes, compare the fresh and pre-warmed options before rebuilding your entire outbound stack. Our guide to fresh versus pre-warmed inboxes explains the trade-off between setup time, warmup, and cost.
2. Inframail — Best for flat-rate Microsoft-based infrastructure
Overview
Inframail offers Microsoft-based email infrastructure with unlimited inbox creation under its published flat-rate plans. Instead of paying a separate infrastructure fee for each mailbox, buyers choose a plan based on the overall sending setup.
Its official website currently lists the Unlimited plan at $147 per month and the Agency Pack at $387 per month. Prices and promotional terms can change, so confirm the checkout amount.
Best for: Agencies and high-volume teams that prefer Microsoft-based infrastructure and predictable subscription costs.
Pricing
Flat-rate plans start at $147 per month on the current public pricing page. The Agency Pack costs $387 per month and includes three dedicated US IPs. Annual billing and promotional offers may change the effective rate.
Pros
Flat-rate pricing rather than a standard fee for each inbox.
Microsoft-based infrastructure.
Automated DNS configuration.
Dedicated IPs included according to the selected plan.
Integrations with common cold email sending tools.
Cons
Not the right fit if Google Workspace accounts are essential.
Warmup arrangements and other services need to be checked separately.
A flat fee may not be economical for a small deployment.
Who should NOT choose it?
Avoid choosing Inframail solely because it advertises unlimited inboxes. If you need Google Workspace, very few mailboxes, or a specific provider-account model, compare other options before committing.
3. Infraforge — Best for private infrastructure and dedicated IPs
Overview
Infraforge focuses on private email infrastructure designed for outbound teams. Its model is different from purchasing native Google Workspace or Microsoft 365 accounts: buyers need to understand the server, IP, domain, and mailbox arrangements being provided.
Its published pricing separates mailbox slots from dedicated IP costs.
Best for: Larger outbound operations that want more control over their SMTP infrastructure and IP allocation.
Pricing
Infraforge's public pricing lists dedicated IP addresses at $99 per IP per month, billed quarterly. Mailbox-slot and domain costs are separate. Check the official Infraforge pricing page for the current mailbox rates and billing requirements.
Pros
Private infrastructure model.
Dedicated IP options.
Automated DNS configuration.
Suitable for teams that need more infrastructure control.
Can fit high-volume setups with an appropriate operating plan.
Cons
Dedicated IP charges can raise the total cost.
Requires an understanding of IP reputation and sending-volume management.
Private SMTP infrastructure is not the same as a native Google Workspace or Microsoft 365 mailbox.
Who should NOT choose it?
It may be excessive for a small team that needs a handful of managed inboxes and doesn't have the sending volume or technical resources to manage a private infrastructure setup effectively.
4. Maildoso — Best for budget-focused SMTP mailbox volume
Overview
Maildoso provides SMTP-oriented mailbox infrastructure for outbound teams that want to scale mailbox quantities at a relatively low unit cost. Its public positioning emphasizes volume pricing and mailbox provisioning.
Its pricing model differs from flat-rate services: the total generally changes with mailbox quantity and the selected plan.
Best for: Cost-conscious teams that prioritize mailbox volume and are comfortable evaluating SMTP infrastructure rather than requiring every inbox to be a native Google or Microsoft account.
Pricing
A current third-party comparison reports $75 per month for 30 mailboxes, $255 for 300, and $499 for 1,000. These are reference figures, not a guaranteed checkout quote; verify the latest Maildoso pricing, domain charges, and warmup costs before ordering.
Pros
Volume-based pricing.
SMTP infrastructure designed for outbound use.
Potentially economical at larger mailbox counts.
Useful for teams that already have a separate sending platform.
Cons
SMTP accounts are not equivalent to native Microsoft 365 accounts.
Warmup and other add-ons can change the real monthly cost.
The lowest advertised price may depend on volume or plan conditions.
Who should NOT choose it?
It may not be suitable if you require native Microsoft 365 accounts, want a bundled managed warmup service, or prefer a simpler fixed-price package.
For a more focused buying comparison, see LiteMail's Maildoso alternative guide.
5. Mailforge — Best for shared SMTP infrastructure
Overview
Mailforge provisions SMTP mailbox infrastructure through a shared IP model. It focuses on fast provisioning, automated DNS, mailbox hosting, and ongoing maintenance.
Unlike a private infrastructure service, shared IP arrangements mean that multiple customers use a shared pool. That can reduce costs, but it offers less IP-level isolation than a dedicated setup.
Best for: Teams that want scalable shared infrastructure and are comfortable connecting it to a separate campaign platform.
Pricing
Mailforge's pricing calculator currently shows $3 per mailbox per month on monthly billing in a sample configuration, with a 10-slot minimum. Annual billing can reduce the effective price. Domains and optional SSL/domain-masking services can add costs.
Pros
Automated DNS setup.
Shared SMTP infrastructure for scaling.
Mailbox slots can be reused under the provider's slot model.
Works with external sending tools.
Monthly and annual billing options.
Cons
Minimum slot purchases can make small deployments less economical.
Shared IP infrastructure does not provide dedicated IP isolation.
Domains and certain add-ons cost extra.
It is infrastructure, not a full campaign sequencer.
Who should NOT choose it?
Don't choose Mailforge if dedicated IPs or native Google Workspace/Microsoft 365 accounts are mandatory requirements. In those cases, compare providers built around those specific models.
6. Zapmail — Best for managed Google and Microsoft mailboxes
Overview
Zapmail provisions Google and Microsoft mailboxes and provides automated setup features for outbound teams. Its plan-based structure can appeal to buyers who prefer a predefined mailbox bundle rather than configuring infrastructure themselves.
It also offers pre-warmed mailbox options, although the price and terms for those options should be checked separately from standard mailbox plans.
Best for: Small teams and agencies that want managed provider mailboxes and a relatively straightforward provisioning workflow.
Pricing
The official pricing page lists $39 per month for 10 mailboxes, $99 for 30, and $299 for 100. Additional mailbox rates depend on the plan. Pre-warmed packages have separate terms, so don't assume standard mailbox pricing includes every warmup feature.
Pros
Google and Microsoft mailbox options.
Automated setup and DNS management.
Pre-warmed options available.
Integrations with external outreach platforms.
Tiered plans for different team sizes.
Cons
Plan minimums can be less flexible for smaller orders.
Additional mailbox pricing varies by tier.
Some features and pre-warmed terms may require a higher-priced plan.
Who should NOT choose it?
It may not be the best fit if you want a flat-rate unlimited-inbox model, a private SMTP environment, or a provider that allows you to purchase exactly the quantity you need without a bundle.
7. Instantly — Best for teams that want mailbox purchasing and sending software together
Overview
Instantly is primarily an outbound campaign platform, but it also offers mailbox purchasing options. This makes it relevant if your reason for leaving Mailscale is to consolidate more of your workflow into one product.
It is not a direct replacement for every infrastructure feature. You should compare the mailbox product, campaign subscription, account ownership, and cancellation terms separately.
Best for: Teams that want campaign management and mailbox purchasing in one ecosystem.
Pricing
Instantly's Help Center currently lists $5 per month for a done-for-you Google account, $10 for a pre-warmed Google account, and $4 for an Airmail account. Domains cost $15 per year. These account charges are separate from the main campaign subscription; see the official pricing explanation.
Pros
Campaign software and account purchasing within one ecosystem.
Built-in campaign management features.
Several mailbox options for different use cases.
Can reduce the number of separate vendors you manage.
Cons
Mailbox charges and campaign subscription charges are separate.
Account types have different characteristics and limitations.
Teams may have less flexibility than when purchasing inboxes independently.
Who should NOT choose it?
Instantly may not be ideal if you already have a preferred sending platform and simply need independent mailbox infrastructure, or if ownership and portability terms are your main concern.
Comparison table: Which provider fits your setup?
Provider | Infrastructure model | Best use case | Published price reference | Main trade-off |
LiteMail | Google Workspace / Microsoft 365 | Managed inboxes, fresh or pre-warmed | Advertised from $2.50 fresh / $4.99 pre-warmed per inbox; verify package totals | Separate sending platform may be needed |
Inframail | Microsoft-based infrastructure | Flat-rate scaling | $147/month Unlimited plan | Microsoft-focused model |
Infraforge | Private SMTP infrastructure | Dedicated IP control | $99/IP/month plus mailbox and domain costs | More infrastructure management |
Maildoso | SMTP infrastructure | Budget-conscious mailbox volume | Volume-based; verify current quote | Warmup and add-ons affect total cost |
Mailforge | Shared SMTP infrastructure | Low-cost provisioning at scale | $3/mailbox/month in a sample monthly configuration; 10-slot minimum | Shared IP model |
Zapmail | Google / Microsoft accounts | Managed provisioning | $39/10, $99/30, $299/100 standard plans | Bundle and add-on terms |
Instantly | Sending platform plus account options | Consolidated campaign workflow | Accounts from 4–10/month, depending on type | Campaign subscription is separate |
Pricing note: These are public pricing references, not equivalent all-inclusive quotes. Domain registration, warmup, IPs, platform subscriptions, taxes, minimum purchases, and billing commitments can change the real cost. Mailscale's legacy account pricing should not be treated as a current quote for its newer outbound platform.
How to choose the right alternative
Before moving, answer four questions.
1. Do you need real Google or Microsoft accounts?
If you need native Google Workspace or Microsoft 365 accounts, start by comparing LiteMail and Zapmail. Review account administration, domain ownership, authentication, and the warmup arrangement.
If SMTP is acceptable, Maildoso or Mailforge may fit a more cost-focused setup. Infraforge is worth examining when private infrastructure and dedicated IPs are important.
2. Do you want per-mailbox or flat-rate pricing?
Per-mailbox pricing is easier to model when your volume changes gradually. Flat-rate pricing may become attractive when you manage many inboxes, but only if the plan's actual sending capacity and infrastructure match your needs.
Do not compare an unlimited-inbox headline with a per-mailbox plan without checking daily sending recommendations, monthly volume limits, and any separate warmup fees.
3. Do you need pre-warmed inboxes?
Fresh inboxes require a preparation period before you increase sending volume. Pre-warmed inboxes can reduce that waiting period, but the label alone does not prove quality.
Use our pre-warmed inbox provider comparison to evaluate warmup history, account access, authentication, and compatibility.
4. Do you want to replace infrastructure or the whole outbound workflow?
If your current stack uses Mailscale for mailboxes and another tool for campaigns, an infrastructure provider may be enough. If you're using Mailscale's newer agentic platform, check whether you also need alternatives for prospecting, sequencing, and reply handling.
For broader category context, read our email infrastructure tools comparison.
How to switch from Mailscale safely
Switching infrastructure is not just a billing change. Plan the migration to protect domain control, mailbox access, and sender reputation.
Inventory your current setup. Record domains, inboxes, authentication records, sending tools, and any important reply or forwarding rules.
Check domain ownership. Confirm who controls registration and DNS, and make sure you can continue using your domains if you cancel the old service.
Choose the replacement model. Confirm whether the new provider supplies SMTP accounts, native provider accounts, or private infrastructure.
Verify authentication. Check SPF, DKIM, and DMARC for the new sending setup. Our SPF, DKIM, and DMARC setup guide explains the checks to perform.
Connect and test. Verify mailbox login, OAuth or SMTP connectivity, reply handling, and message authentication before launching campaigns.
Ramp gradually. Avoid switching a large number of accounts and immediately sending at maximum volume. Monitor bounces, complaints, and provider warnings, and adjust when results deteriorate.
For a new sending domain, use the new-domain deliverability guide. If you need a more detailed implementation checklist, follow the cold email inbox setup guide.
How LiteMail can help you replace Mailscale
LiteMail is worth evaluating if your main goal is managed Google Workspace or Microsoft 365 inboxes rather than a complete AI prospecting platform.
You can choose fresh inboxes if cost is your main priority and you have time to prepare them. Pre-warmed inboxes may be a better fit if you want to shorten the setup process and prefer an inbox with existing warmup history.
Before ordering, confirm the account type, the current package price, included domains, authentication setup, administrative access, and compatibility with your sending tool. LiteMail provides mailbox infrastructure; your sending platform still manages campaigns and sequences.
If you already use Instantly, compare your options in our guide to pre-warmed inboxes for Instantly users. For technical context, our cold email deliverability guide explains how authentication, reputation, and sending practices work together.
Ready to compare inbox options? Explore LiteMail's fresh and pre-warmed inbox plans and choose the setup that matches your budget, launch timeline, and sending workflow.
Frequently asked questions
What is the best Mailscale alternative in 2026?
There is no single best option for every team. LiteMail is worth considering for managed Google Workspace or Microsoft 365 inboxes; Inframail for flat-rate Microsoft-based infrastructure; Infraforge for private SMTP infrastructure; and Maildoso for cost-focused SMTP volume.
Which Mailscale alternative is best for Google Workspace inboxes?
LiteMail and Zapmail are two options to compare. Check current account availability, domain terms, warmup history, administrative access, and the total price for your required mailbox quantity.
Is SMTP infrastructure the same as Google Workspace or Microsoft 365?
No. SMTP infrastructure describes a sending setup and connection method. Google Workspace and Microsoft 365 are provider-based account environments. The difference affects account administration, integration methods, and how you manage infrastructure.
Is flat-rate email infrastructure always cheaper?
No. Flat-rate pricing can work well at higher volume, but a smaller team may pay for unused capacity. Compare the actual inbox quantity, sending capacity, IP allocation, warmup requirements, and extra tools before deciding.
Do pre-warmed inboxes guarantee inbox placement?
No. Warmup history alone cannot guarantee future inbox placement. Authentication, sender reputation, list quality, recipient engagement, sending patterns, and provider policies continue to affect delivery.
What should I check before leaving Mailscale?
Confirm your current plan, export or document any necessary configuration, verify domain ownership, check account portability, and identify whether you need replacements for campaign software or prospecting features as well as infrastructure. Get the new environment working before moving all campaigns.
