Cold emailing is a solid tool for outreach (both for B2B and B2C), but choosing the right platform can make or break your success. Maildoso is a popular choice, but it may not be the best fit for everyone due to its limitations.
This guide compiles the best Maildoso alternatives to help you optimize your cold email campaigns. Discussion points include Maildoso’s limitations, pricing details, deliverability issues, feature gaps, and a detailed overview of top competitors. One standout alternative, Warmy.io, offers advanced solutions like email deliverability and automated warmup to ensure your messages land in the inbox.
By the end of this article, you’ll understand why using Warmy.io as a Maildoso alternative could be a game-changer for your outreach efforts.
What is Maildoso and how does it work?
Maildoso is an infrastructure platform built for teams that send large-scale cold email campaigns while keeping their main business domains safe. Rather than functioning as a simple outreach tool, Maildoso focuses on the technical backbone of cold emailing. This means it takes care of managing domains, inboxes, and authentication to improve deliverability and protect sender reputation.
When it comes to cold emailing, senders usually use multiple mailboxes. This is a common strategy to keep the main company domain safe. For example, if an outreach domain gets flagged or runs into invalid contacts, the main business domain stays healthy.
However, the process of setting up multiple mailboxes—including registering different domains, buying accounts, and configuring records for each one—can take a really long time. Plus, the email setup process is prone to human error.
This is exactly the problem that Maildoso resolves.
How Maildoso works: key features of Maildoso
Maildoso is built to provide a strong foundation that ensures your emails are delivered reliably. Below are the core features that make Maildoso unique:
- Fast and efficient creation of mailboxes with automatic setup of email authentication protocols: Set up hundreds of mailboxes and domains in as fast as 10 minutes. This includes registration of domains, setting up of mailbox names, and automatic configuration of SPF, DKIM, DMARC, and MX records.
- Automatic IP rotation: In the event that one IP gets flagged, Maildoso replaces it automatically to keep domains healthy and in top shape.
- Optimized for deliverability: Unlike providers such as Gmail or Outlook, Maildoso’s mailboxes are optimized for cold outreach and fine-tuned to ensure emails land in the inboxes.
- Seamless integration with various outreach tools: Maildoso integrates smoothly with outreach tools like Instantly and Smartlead. Once mailboxes are set up, they can be exported directly and used to send campaigns right away.
- Domain forwarding: All replies can be funneled into a destination of your choice. This feature helps keep mailboxes in order.
Maildoso pricing
Maildoso has three pricing plans:
- $100/mo (32 mailboxes + 8 domains for free)
- $166/mo (68 mailboxes + 17 domains for free)
- $733/mo (400 mailboxes + 100 domains for free).
This structure provides a cost-effective means for businesses that need to scale their cold email outreach quickly without sacrificing sender reputation and deliverability. Maildoso also provides a 30-day guarantee. Additionally, premium AI warmup comes at an additional cost:
- $160/month for 32 mailboxes
- $340/month for 68 mailboxes
- $2,000/month for 400 mailboxes
Who benefits from Maildoso?
Maildoso is a great tool for agencies, lead generation companies, and sales teams managing multiple inboxes on a daily basis and across multiple domains. Those running outreach campaigns at scale will definitely appreciate the hassle-free experience Maildoso provides when it comes to setting up the email infrastructure.
One review from G2 mentions: “We all know setting up the backend on email is a foreign language for so many but Maildoso makes it so easy. Within 10-15 minutes you can have brand new look-alike domains and 10+ mailboxes setup.”
Why consider Maildoso alternatives?
Looking for Maildoso alternatives? While Maildoso is a popular tool for cold email outreach, there are several reasons why some users may consider exploring Maildoso alternatives. There are some features that Maildoso doesn’t offer, which can impact the effectiveness, scalability, and overall experience of using the platform:
Deliverability issues
Despite offering spam protection features, many users report that Maildoso doesn’t fully address email deliverability issues. Emails can still land in spam folders, particularly if they’re sent in large volumes or if the email account isn’t properly warmed up. This can lead to wasted efforts and lower engagement rates.
According to one user review in G2, they have been sending cold emails for years without “burning” a domain. Upon using Maildoso, every domain they used was burned in a single day due to a mentioned “large scale issue.”
Shared IP address system is a double-edged sword
While the use of a shared IP address system can help boost your deliverability, it still very much depends on the other senders using the shared IP system.
Pricing concerns
Some plans can be relatively expensive, especially for smaller businesses or startups with limited budgets. The cost may also increase as your email outreach grows, making it less scalable for businesses that need to send high volumes of emails. Additionally, the warmup price is on top of the cost of the mailboxes. There are other Maildoso alternatives, such as Warmy.io who offer much more comprehensive warmup features built in with the monthly subscription plan.
User experience and support
Some users have reported challenges with Maildoso’s user interface, which may not be as intuitive as other platforms. Plus, customer support can be slow or insufficient, especially for users who need immediate help.
One user review states, “I had to reach out to support almost every day because there would be issues with the portal you log in to to manage.”
Given these limitations, exploring Maildoso alternatives can provide users with more flexibility, better deliverability, enhanced features, and more cost-effective solutions tailored to their specific needs.
Top 7 Maildoso alternatives for cold email success
Each of these Maildoso alternatives offer unique features that can help senders achieve cold email success.
Tool | Key Features | Pros | Cons | Pricing |
Warmy.io | AI email warmup simulating human behavior (open, click, scroll, reply) Up to 5,000 emails/day One dashboard for all mailboxes Supports 30+ languages | Fully automated warmup Real mailboxes for safe engagement Free tools for deliverability Dedicated support | Focused solely on deliverability (not full outreach suite) | Custom pricing (3 plans); Free 7-day trial |
Mailreef | Dedicated server (no shared IPs) 1-click domain/mailbox setup Pre-configured SPF, DKIM, DMARC | Full control of reputation Fast and easy setup Integrates with major cold email tools | Costs increase quickly for SMBs Mixed deliverability reviews | Agency: $240/mo (annual) AgencyFlex: $249/mo (monthly) Enterprise: Custom + $0.001/email |
Mailforge | AI warmup & IP rotation Inbox placement tests Domain health audit tools Automated authentication setup | IP rotation reduces spam risk Fast mailbox setup Helpful customer support | Confusing UI Unclear pricing No campaign automation | Custom pricing based on email volume, domains, and mailboxes |
Zapmail | Automated SPF, DKIM, DMARC setup US-based IPs for better deliverability Centralized mailbox dashboard 1-click tool integrations | Fast setup Central management dashboard Improves compliance & deliverability | Limited scalability Only works with Google Workspace & Microsoft 365 No free trial/demo | Starter: $39/mo Growth: $99/mo Pro: $299/mo (Yearly discounts available) |
Smartlead.ai | Unlimited warmup AI personalization & automation Smart Delivery & IP tracking Unified inbox Dedicated US/EU servers | Easy warmup setup Organized unified inbox Strong CRM integrations White-label options for agencies | Interface lags & sync bugs Costly add-ons Average analytics depth | Basic: $39/mo Pro: $94/mo Custom: from $174/mo (Discounts for annual billing) |
Woodpecker | Built-in warmup & email verification A/B testing & conditional follow-ups Multi-domain & inbox rotation CRM integrations (HubSpot, Salesforce, etc.) | Excellent deliverability Easy to use Unlimited users/mailboxes Great customer support | Limited marketing automation Basic reporting Warmup less advanced than AI tools | Starter: $29/mo Growth: $188/mo Scale: $1,354/mo Max: $9,999/mo (7-day free trial) |
Inframail | Dedicated IPs & unlimited inboxes Auto SPF/DKIM/DMARC setup Integration with Smartlead & Instantly CopyChecker & AI Cold Email Generator | Full deliverability control Fast setup Free tools for optimization Microsoft-backed infrastructure | Limited analytics Risk with poor sending practices Slightly expensive | Unlimited: $99/mo Agency: $249/mo DFY Campaign: $3,497 setup + $299/mo |
Warmy.io
If you’re looking for an alternative to Maildoso that focuses on enhancing email deliverability and warming up your email accounts, Warmy is an excellent choice to scale your cold email efforts.
Unlike Maildoso which focuses only on email infrastructure, Warmy provides a full suite of AI-powered tools that ensure your emails land in inboxes while boosting sender reputation and improving overall cold email performance. Warmy.io is the leading all-in-one solution for email deliverability, with the features like:
Key features:
- AI-powered email warmup simulates actual human behavior like opening emails, clicking links in email, scrolling, and even recovering emails from spam. These interactions help improve inbox placement and domain reputation by sending signals to email providers that the sender is legitimate and can be trusted.
- Capability to handle up to 5,000 emails per day, making it a reliable tool for large-scale senders
- One dashboard where senders can manage multiple mailboxes at the same time
- Integrates smoothly with Google Postmaster Tools for timely monitoring of key metrics like domain reputation, spam rate, and email authentication status
- Supports email warmup in over 30 languages
Pros:
- Automated email warming up means no manual intervention is required, saving time and effort.
- Real mailboxes are used for safer and more effective warmup.
- Offers multiple free tools which also contribute to improving deliverability
- Continuous development of additional features and tools
- Dedicated customer support for Warmy users
Cons:
Warmy.io’s focus is ensuring senders build and establish a positive sender reputation through effective warmup. It is an all-in-one deliverability tool for this reason, but it does not provide other marketing features.
Pricing:
Warmy’s offers three pricing plans. Interested users will need to book a demo to get the specific values. Warmy also offers a free 7-day trial which is more than enough to explore all premium features.
Mailreef
Mailreef is another Maildoso alternative that belongs to the popular cold email infrastructure providers. Compared to Maildoso that uses the shared IP system, Mailreef offers a dedicated server which eliminates the risks associated with shared servers or IPs .
Key features
- Dedicated server: This provides complete control over sender reputation and even overall deliverability. This means that your deliverability is 100% dependent on what you do.
- Single-click setup: With only one click, senders can create new domains and mailboxes while skipping time-consuming DNS configurations.
- Pre-configured authentication records: Every Mailreef inbox already has SPF, DKIM, and DMARC set up properly.
Pros:
- Provides full control to senders
- Set up of multiple email accounts is fast, efficient, and adheres to required protocols
- Connects easily with popular email outreach tools
Cons: The total cost can increase quickly for small to medium-sized businesses. Reviews regarding its deliverability performance also vary and are inconsistent, with some users reporting that their emails are being marked as spam or not reaching the target inboxes.
Pricing:
MailReef offers three pricing tiers:
- Agency: $240/month (12-month commitment)
- AgencyFlex: $249/month (cancel anytime)
- Enterprise: Custom pricing for large-scale operations
MailReef also charges an additional $0.001 per email sent.
Mailforge
Mailforge is a tool built for cold emailers that offers a reliable and scalable foundation for cold email success. It also uses the shared IP systems like Maildoso but they use a combination of shared IPs with IP rotation. This significantly reduces the likelihood of your emails landing in the spam folder. Mailforge is also part of the Salesforge ecosystem, which means it was built specifically for cold outreach.
Key features:
- AI warmup and IP rotation: This feature combines shared IP pools with dynamic IP rotation to improve deliverability and reduce the risk of spam flags.
- Deliverability testing tools: Mailforge includes tools to test inbox placement and auditing features that evaluate domain health, authentication, and reputation.
- Automated SPF, DKIM & DMARC setup: This ensures compliance with best practices and improved inbox placement.
Pros:
- IP rotation reduces risks of being tagged as spam
- Domains and mailboxes are ready within minutes
- Users report responsive and helpful support, especially during setup or troubleshooting.
- Reliable infrastructure was built for cold email outreach specifically rather than general email marketing.
- Integrates seamlessly with major cold email outreach platforms and CRMs
Cons:
- The interface can be confusing for some users as the dashboard is not that intuitive.
- Pricing model is unclear and can take some time to digest
- Focuses on infrastructure set up only, and has no features for campaign automation or content tailoring or warmup
Pricing:
Mailforge has custom pricing to be determined based on the following factors: emails per sequence to be sent, mailboxes per domain, contacts per month to be processed. Mailforge then calculates the required domains and required mailboxes for users to get the final cost.
Zapmail
Zapmail is a cold email infrastructure platform similar to Maildoso. It is designed to simplify the process of setting up and managing mailboxes for outbound email campaigns by automating the technical aspects of cold email outreach.
Key features:
- Advanced email deliverability setup ensures optimal email health and improves sender reputation.
- Automated setup of SPF, DKIM, and DMARC which are critical email authentication protocols that improve security and ensure compliance
- Streamlined mailbox management assigns separate workspaces for each domain to maintain organization and structure.
- One-click integrations: with popular cold email outreach tools.
Pros:
- Fast and efficient setup allows businesses to set up domains and mailboxes within minutes, optimizing time spent on email outreach tasks.
- Centralized dashboard allows users to manage multiple email accounts and domains from one place
- Saves time and improves email compliance with the automated setup of authentication protocols and other essential records
- US-based IP addresses boost deliverability and email reputation, improving the chances of emails landing in recipients’ inboxes.
Cons:
- Scalability is limited. Cold emailers looking to scale email volumes faster may easily outgrow what Zapmail has to offer.
- Pricing can get costly as email volume increases.
- Platform support is limited as it only works with Google Workspace and Microsoft 365.
- Does not offer a free trial or a demo.
Pricing:
Zapmail offers competitive pricing for small and mid-sized businesses but may become too expensive for those looking to scale their cold email campaigns rapidly. The lack of a free trial or demo may also deter businesses from testing it out before committing to a plan.
Monthly plans
- Starter Plan: $39/month
- Growth Plan: $99/month
- Pro Plan: $299/month
Yearly plans
- Starter Plan: $390/year ($32.50/month)
- Growth Plan: $990/year ($82.50/month)
- Pro Plan: $3000/year ($250/month)
Smartlead.ai
Designed for businesses that want to scale their cold email campaigns efficiently, Smartlead.ai offers unlimited warmup, AI-driven personalization, and a unified inbox to streamline communication. It’s ideal for teams looking for flexibility as they grow, as it offers the option to expand into multichannel outreach.
Key features:
- Smart Delivery: Allows users to test campaigns for inbox placement and spam score. This includes reputation tracking across 400 blacklists.
- SmartSenders: Buying domains and setting up Google, Outlook, or SMTP mailboxes can be done in just two easy clicks. This feature also automates time-consuming tasks like domain setup, DNS configuration, mailbox creation, and configuration of authentication protocols. This makes it east to get your infrastructure up and running right away.
- SmartServers: Smartlead provides dedicated US and Europe servers for scalable email outreach.
- Email Verification: Provides accurate and fast email verification for improved deliverability and reduced bounce rates
- Email follow-up automation: Automated follow-up emails run in the background, set up to reach recipients’ at optimized intervals and schedules. Additionally, these follow-ups can be personalized according to behavior.
Pros:
- Offers a full white-label experience for agencies or teams managing multiple campaigns across multiple businesses
- Easy, effortless, and unlimited warmup included
- The “unibox” or the Master Inbox makes reply management simple and organized
- Integrates smoothly with major CRMs like HubSpot and Salesforce
Cons:
- Occasional lags, bugs, and glitches are reported by users
- Inbox disconnections and syncing issues are also reported frequently
- Offers a lot of features pertaining to both cold email infrastructure and warmup, but doesn’t specialize in either one
- Cost can get pretty high quickly for senders who are targeting all features
Pricing:
- Basic Plan: $39/month ($32.5/month if billed annually)
- Pro Plan: $94/month ($78.3/month if billed annually)
- Custom Plan: $174/month onwards
- Advanced features (SmartDelivery, SmartSenders, SmartServers, Email Verification) come with separate monthly costs
Woodpecker
Woodpecker is an email outreach platform that markets itself as the best cold email tool. It is designed to streamline cold emailing while ensuring deliverability. It’s easy-to-use interface easily makes it a favorite for teams.
Key features:
- Automated email warmup: The built-in warmup feature helps improve sender reputation by preventing emails from being marked as spam.
- Unlimited email accounts and team members: Scalable for small to large teams.
- A/B testing: Senders can test different subject lines, email bodies, and sequences to find what works best for your outreach.
- Email verification: Reduces bounce rates by automatically verifying emails.
- Inbox rotation and multi-domain sending: Ideal for high-volume campaigns to avoid inbox throttling and improve inbox placement.
Pros:
- Native integrations with HubSpot, Salesforce, Pipedrive, and other popular CRMs for seamless lead management.
- Easy to manage all replies in one place
- Easy setup and management makes it accessible for new and experienced users
Cons:
- Lacks some advanced email marketing features especially for large-scale campaigns
- Lacks in-depth reporting and analytics
- Warmup feature may not be that reliable
Pricing:
- Starter: $29/month; $20/month if annual billing
- Growth: $188/month; $126/month if annual billing
- Scale: $1,354/month; $903/month if annual billing
- Max: $9,999/month; $6,666/month if annual billing
Woodpecker offers a 7-day free trial for users to test out the platform and its features before committing to a paid plan.
Inframail
Inframail is a streamlined email infrastructure platform that simplifies the setup and management of cold email campaigns. It provides users with dedicated IP addresses, unlimited inboxes, and automated email authentication setup, allowing businesses to maintain full control over their deliverability.
Key features:
- Dedicated IP address with unlimited inboxes: Provides full control over sender reputation and deliverability, with unlimited email inboxes at a flat rate.
- Automated SPF, DKIM, and DMARC setup: Automatically configures critical email authentication protocols for each new inbox to ensure compliance
- Integration with popular cold email tools: Works seamlessly with popular tools like Smartlead and Instantly, allowing users to easily export inboxes and start campaigns immediately.
- IP and domain dashboard: Helps users monitor email deliverability by providing data and insights
Pros:
- Microsoft-backed infrastructure means strong infrastructure and better email deliverability.
- Comes with a lot of free tools. Examples include CopyChecker to remove spammy words from email content and the AI Cold Email Generator to help create effective email templates.
- Dedicated IP addresses and unlimited inboxes ensure full control over deliverability.
- Fast and easy set up of new mailboxes and domains quickly
Cons:
- Lacks advanced analytics or detailed reporting features for deeper campaign insights and optimization.
- While ideal for small to mid-sized campaigns, businesses looking to scale rapidly may encounter limitations in infrastructure and performance.
- Dedicated email hosting brings risks if senders don’t follow best email sending practices. They may end up damaging their reputation across all domains and addresses.
- Pricing is a bit on the expensive side compared to other Maildoso alternatives offering similar features
Pricing:
- DFY Campaign Setup: $3,497 one-time payment; $299/month
- Agency Pack: $249/month; $199.20/month if paid annually
- Unlimited Plan: $99/month; #79.20/month if paid annually
Why Warmy is the best among Maildoso alternatives for cold email success
Warmy.io stands out as one of the top Maildoso alternatives for cold email campaigns, thanks to its advanced focus on email deliverability and reputation management.
While many cold email tools focus either on sending emails at scale or setup of email infrastructure, Warmy.io takes a more holistic approach by focusing on deliverability. This ensures your emails and your cold email outreach is not only efficient but also highly effective.
The importance of email warmup for cold outreach success
Email warmup is crucial but often overlooked. Without proper warmup, even the best-crafted emails can end up in spam or get blocked altogether.
Warmy.io tackles this problem by automating the email warmup process through gradually increasing email sending volume to avoid sudden spikes that may trigger spam filters. This process builds a strong sender reputation which helps establish trust with email service providers, ensuring long-term deliverability and cold email success.
Aside from automated email warmup, Warmy also provides additional tools which optimize various factors that impact deliverability:
- Warmup Preferences: Allows senders to tailor the warmup distribution per provider and based on specific type of engagement (B2B vs B2C)
- Advanced seed lists: Real email addresses that interact with your emails for a reliable warmup process. Emails are opened, read, scrolled, clicked on, and even recovered from spam.
- SPF and DMARC Record Generator: Warmy has SPF (Sender Policy Framework) Record Generator and DMARC (Domain-based Message Authentication, Reporting, and Conformance) Record Generator to provide additional protection of your domain from email spoofing.
- Template Checker: Warmy’s free Template Checker scans cold email templates to review and assess if they are optimized for deliverability. It analyzes the structure, content, and presence of potential spammy words and signals. 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: Centralized dashboard for monitoring overall health of all email domains.
- Email Deliverability Test: Probably the most comprehensive email deliverability test, it gives users data on where their emails are landing across various inbox providers.
Lock in cold email success with Warmy
From automated email warmup to real mailbox interactions, Warmy.io provides everything you need to ensure your cold email campaigns perform at their best.
Don’t let your emails go unnoticed and take control of your email deliverability with Warmy.io today. Get started now with a free trial of Warmy.io and experience the difference for yourself!
FAQ
What is Maildoso?
Maildoso is an email infrastructure platform that simplifies the setup of domains and mailboxes for large-scale cold email campaigns.
What makes Warmy.io different from Maildoso?
While Maildoso offers some deliverability tools, Warmy.io focuses extensively on improving inbox placement by using real mailboxes for warming up email accounts and maintaining a strong sender reputation. Unlike Maildoso, Warmy.io automates the entire email warmuup process, gradually increasing email sending volume to ensure better deliverability and domain reputation.
How does Warmy.io help with email deliverability?
Warmy.io improves email deliverability through a series of automated and strategic processes that ensure your emails land in the inbox. These processes include automated gradual sending volume increases, comprehensive data monitoring, and providing real-person interactions.
