With a reputation for having the most simplified and user-friendly interface, MailScale stands out as one of the most reliable email outreach tools. It’s perfect for small businesses and startups aiming to increase email reply rates.
What MailScale ultimately does is it automates the creation of company email accounts for cold outreach. However, despite its impressive capacity and non-complex UI (User Interface), some users still find the need to search for a better and far more effective alternative.
Can it really scale? Understanding MailScale and its functions

MailScale is a software tool that creates automated email inboxes and supply sending infrastructure for bulk email sending, which is useful especially for scaling your cold email outreach.
But why is this necessary? Here at Warmy.io we understand that sending bulk emails under one account has a large chance of getting your email flagged as spam.
If your marketing and sales strategies solely relies on this channel, chances are you will need this type of software. MailScale can generate up to 1,000 email accounts, and you can use these accounts to send emails and ensure that you do not encounter any form of deliverability issues.
What is also worth noting is its capacity to automate the email setup process, by including all other technical details like DNS records, which makes it much faster and cheaper in contrast to other traditional methods.
How does MailScale work?
1. Email account setup
The first step of a successful cold email marketing campaign is to set up multiple email accounts. This entails purchasing domains and configuring DNS settings (DMARC, SPF, and DKIM) which are necessary to ensure that your emails will not land in spam.
This process, when done manually, can take days or weeks. Sometimes, it can even take months. With MailScale, however, this tedious process is handled more efficiently.
2. Warmup to achieve high deliverability
Remember that for many ESPs (Email Service Providers), a new email that immediately sends bulk messages is highly suspicious. To ensure security of its users ESPs will flag this and send your messages to spam.
Hence, you need to gradually send emails to ensure that you are on the safe side of your email reputation. But, of course, this will take a large chunk of your time and effort.
After you set up the necessary settings and authentication protocols, MailScale will provide a warm up period for your email accounts. This is critical to achieve high deliverability and would give you the ability to achieve a positive email reputation.
This procedure is necessary to guarantee that you can send email and improve the number of your outreach in the future, and achieve higher conversion rates.
3. Campaign Management
One of the greatest advantages of MailScale is its ease of integration with various email services. This makes MailScale an ideal partner to make your campaigns easily manageable, and give you a better email conversion rate.
Why consider MailScale alternatives?
Yet despite its capabilities, many users still try to find other email outreach tools. But why?
Afterall, the name of the product suggests that they are scalable with an impressive capacity to help improve your email deliverability and eventually reputation.
Despite its name, MailScale is not as scalable as it sounds. This is understandable since its foundation was just 2 years ago (Q4 of 2023), which means some of its features for larger businesses may not be suitable.
Furthermore, despite its user-friendly interface and helpful customer support staff, some people may still experience some form of dissatisfaction with MailScale. Here is what we found:
- Steep and unclear pricing: Although it has a 7-day free trial it may not be enough to serve as a deciding factor for your email deliverability pursuit.
- Effective but still new: Some users had some minor confusion with importing domains to create mailboxes, this includes setup of DNS records to against spam.
- Not scalable for big businesses: Perhaps one of the biggest concerns for many cold email outreach strategies and other corporations is that MailScale may eventually not be sufficient for companies that are scaling their business. This issue is primarily due to them being relatively new in the field.
Other potential limitations:
- Lacks deep and granular data when it comes to its deliverability report
- Users have no control over the setup; the domains, IPs, and warmup pace are completely within the control of Mailscale
With all of this said, it is ideal to dabble into some of its alternatives.
Top 7 MailScale alternatives for better email success
1. Warmy.io

Warmy.io is a renowned all-in-one solution for your email deliverability needs. It is developed to help you enhance your inbox placement and automate your email warm up process.
Warmy can be considered as a perfect replacement or overall alternative for MailScale and other email outreach tools since it offers the guarantee that each email you are sending is delivered right to your recipients.
One of its amazing advantages is its advanced AI-powered tools helping your senders throughout the entire email outreach process.
Whether it is during technical setup, to mailbox management, to automated warmup, and even until continuous optimization of inbox placement, Warmy can definitely help you achieve the best email outreach process.
Here is a deep dive of its features.
- AI-powered email warmup that simulates actual human behavior. It is capable of:
- Opening emails
- Clicking links in the email content
- Scrolling through the entire email
- Removing emails that land in spam; put them in the inbox and mark them as important.
- Gives senders the ability to manage multiple mailboxes and email accounts from one dashboard.
- Advanced and developed enough to handle up to 5,000 emails per day, making it a reliable solution for large-scale campaigns
- Integrates seamlessly with Google Postmaster Tools for accurate monitoring of key metrics like domain reputation, spam rate, and email authentication status
- Has a collection of free tools which also contribute to overall sender reputation
Limitations: Warmy.io’s entire focus is making sure that you have a reputable email via its email deliverability and warmup capabilities. Hence, it doesn’t have any multichannel outreach capabilities.
2. ZapMail

Zapmail is a cold email infrastructure platform used for setting up and managing mailboxes for email outreach and outbound initiatives.
Key features:
- Highly advanced email deliverability setup to guarantee optimal email health and reputation
- Automated SPF, DKIM, and DMARC Setup critical email authentication protocols to ensure and maximize compliance and security with very little — or none — manual intervention.
- Streamlined Mailbox management assigning separate workspace accounts for each domain to keep the system organized.
Limitations:
- Constraints in scalability
- Can be too expensive for smaller businesses
- Only offers basic data analytics
3. MailForge

Mailforge is a distributed email infrastructure tool that leverages a shared IP pool that distributes mailbox accounts among different businesses. Its functions can be compared to Gmail or Outlook, but what makes it different is its design specifically for cold email sequences.
Key features:
- Email Deliverability Test: Determines whether emails are landing in spam or rejected
- WHOIS Domain Checker: Helps you identify “who is” the owner of the domain and confirm its expiration date.
- ROI Calculator: Gives you a rundown of how much ROI (Return on Investment) you can generate by using the AI agent.
- DKIM (DomainKeys Identified Mail) Checker: Verify DKIM setup quickly, and ensure correct configuration and proper authentication.
- DMARC Checker and Generator: Verifies the status of DMARC records and simplifies its creation.
- SPF Checker and Generator: Obtain a tailored SPF record for your domain in just seconds, with a capacity to supply immediate feedback on any syntax errors.
Limitations:
- Confusing pricing
- Email-centric (not equipped for multi-channel outreach)
- Not so user-friendly.
4. Woodpecker

Woodpecker supplies not just an email deliverability advantage, but can also help you with initiating an intelligent follow-up sequence with multichannel outreach to expand your outreach effort — an advantage that you cannot acquire with MailScale.
Key features:
- Cold Email Campaigns, helping you reach different prospects
- Email deliverability and warmup to maintain ideal and credible email standing
- Intelligent follow-up sequence and personalization to maintain meaningful client relationships.
Limitations:
- Can compromise warmup and email deliverability due to its multichannel outreach sequence
- Ironically, have limited features for email marketing
5. Inframail

Inframail offers an easier and streamlined setup for cold email outreach, which also includes automated configuration of SPF, DKIM and DMARC records.
Key features:
- IP address for senders, with unlimited inboxes initiating full deliverability control
- Unlimited email inboxes at a flat rate
- Integrates well with some of the most popular cold email tools
Limitations:
- Requires thorough follow-through with email sending practices
- Setup is fast but it doesn’t guarantee the best deliverability rates.
- Inframail doesn’t offer in-depth analytics or reporting features.
- May warrant high cost for its usage.
6. Lemlist

Lemlist is capable of deliverability and email warmups, which makes it another ideal alternative for MailScale.
Key features:
- Warmup and Deliverability booster
- Spam Risk monitoring
- Lead database of over 450 million personas
Limitations:
- Some users reported a lack of data privacy
- User interfaces may require more familiarization; although there are reports that they are also too simple.
- Occasional technical glitches
7. Instantly.ai

Instantly.ai supports deliverability and campaign automation. It is also useful in helping with actual cold email outreach.
Key features:
- AI Sequence Generator to help senders create conditional, personalized, and intelligent follow-ups
- Blacklist Monitoring guarantees client reputation remains intact.
- Built-in warmup and Unibox features
Limitations:
- Consistency issue in its AI generated copy
- Require other deliverability tools due to its lack of in-depth analytics.
Achieving true Scalability: Why Warmy is the ultimate alternative for MailScale
Warmy is the ultimate email deliverability tool that transcends what other email deliverability platforms can provide. It is built with the promise of supplementing the perfect solution to help you achieve and maximize your inbox placement.
But how exactly can it do that?
AI-powered email warmup automation
With its AI-powered email warmup, it can give you the ability to build and maintain a positive sender reputation.
It features a Warmup Preference giving you the ability to completely control how the warmup efforts are distributed.
Therefore, if your goal is to improve Gmail deliverability, for example, you can adjust the percentages accordingly
Advanced seed lists
Warmy’s Advanced Seed Lists are the first of its kind and uses real email addresses that actively interact with your emails.
It ensures that:
- Your links are clicked to improve sender reputation.
- Manually remove the email that landed in spam
- Mark these emails as important; giving a signal to ESPs that your emails are legitimate
- Obtain the power to test email in various inboxes (Gmail, Outlook, Yahoo, etc.) to identify potential deliverability issues
SPF and DMARC Record Generator
The SPF (Sender Policy Framework) Record Generator and DMARC (Domain-based Message Authentication, Reporting, and Conformance) Record Generator simplify the process of setting up these crucial email authentication protocols.
Template Checker
Warmy’s free Template Checker scans your email templates to ensure they are optimized for deliverability.
This feature analyzes not just the structure but also the content, and potential spammy words that trigger spam filters, showing senders the exact criteria they use to determine the chances of your email template landing in spam.
Additional Information: The Chrome Extension version of the Template Checker makes it possible for senders to analyze and edit their emails right within their sending platform.
Domain Health Hub
Warmy users have access to a comprehensive Domain Health Hub, which monitors the overall health of their email domains. This includes tracking domain reputation, blacklisting status, and other factors that could affect deliverability.
Free Deliverability Test
Meanwhile, its Free Email Deliverability Test allows users to see how well their emails would perform across multiple inbox providers and what percentages land in spam or inboxes. This gives businesses and senders an idea of where they stand and what they have to work with. Then they can act accordingly, and not blindly.
Warmy.io: the scalable email deliverability tool for email outreach
There are tons of email marketing tools that can be perfect for your business, but you will need to cross a vast ocean of tools that are offering the promise of the perfect email deliverability only to realize that it may not be suitable for you in the long run.
The goal is for you to improve your business, and make sure that your strategies, tools, and process are scalable. Warmy’s full suite of tools has a massive contribution and improvement to your sender reputation, that will ensure scalability and long lasting success. Hence, it is time to sign up for your free trial today.
FAQ
What is MailScale?
MailScale is an email deliverability and warmup tool designed to improve the reputation of your email domain and increase inbox placement.
Is MailScale good for small businesses?
MailScale can work for small businesses, but its pricing and complexity may be challenging for beginners. Alternatives like Warmy, Saleshandy or Woodpecker might be more suitable.
Which MailScale alternative is best for high-volume sending?
Warmy is a strong choice due to its AI-powered warmup and support for unlimited inbox accounts.
How do I choose the right email outreach tool?
Consider your goals (deliverability, automation, personalization), budget, and the size of your team. Start with a free trial where possible to test the platform before committing.