Cold email outreach is an effective way to make people know about you without investing significant money in ads or SEO. The problem is that you can’t simply open up a new Gmail account and start sending hundreds of emails per day. Instead, you need a proper cold email infrastructure to make sure your outreach campaigns actually end up in inboxes and not the spam folder.
Mailreef is one of the more popular cold email tools that can help you with scaling cold email campaigns, even with multiple mailboxes. Today, we look at its pros and cons, pricing model and more, as well as the best alternatives for scaling cold email infrastructure.
What is Mailreef and who is it for?
Mailreef is a cold email infrastructure tool that helps you set up and create unlimited inboxes, add dedicated IP addresses, set up SPF, DKIM and DMARC and get everything in order for successful cold outreach.
Mailreef is built for businesses focused on cold email campaigns, agencies that need unlimited mailboxes and anyone who wants to safely use multiple email accounts to do outreach campaigns.
Top features in Mailreef
Mailreef has a number of features for upping your cold email deliverability.
These include:
- Dedicated mail server
- Dedicated IP addresses for outreach
- 150+ mailboxes per server
- Bring your own domain
- One-click domain purchases
- One-click, unlimited mailbox creation
- Auto-create SPF, DKIM, DMARC
- Live technical support
- Screening for spammers
- Developer API access
- Server and mailbox monitoring
- Smartlead and Instantly integrations
Mailreef pricing structure
Mailreef has three pricing plans for your cold email efforts.
The Agency plan costs $240 per month and you have to sign up for a year. In other words, there is no option of trying it out for a month or two. On top of this flat monthly fee, also pay +$0.001 for each email send.
The Agency Flex is the exact same thing as above, with one key difference: you can purchase it on a monthly basis and cancel anytime. This is why the plan costs $249 per month and the send price per email is the same.
The Enterprise plan does not have publicly disclosed pricing, so you’ll have to get in touch to get a quote.
All of the plans come with the same features, from their dedicated email server to the developer API access.
Reviews from real Mailreef users
We tried to understand what real cold emailers have to say about Mailreef as a tool. The problem? There are no legitimate Mailreef reviews on platforms such as G2, Capterra, Trustpilot and others. There are only occasional mentions of Mailreef on Reddit, but there are no actual accounts of people using this tool.
In short, you’ll have to splurge $249 for one month for Mailreef to see if it meets your needs.
Top Mailreef alternatives for cold email campaigns
Looking for something with more features and more affordable pricing for your cold email campaigns?
Woodpecker
Woodpecker is a versatile cold email platform built for B2B teams and agencies. It helps senders optimize campaigns, create highly personalized cold emails, track their success and make sure that every message reaches the primary inbox. It doesn’t just provide a robust email infrastructure. It also helps you maintain your email reputation and achieve consistent deliverability across multiple campaigns.
Top features
- Email warm-up built-in: automatically warms domains and mailboxes to build sender reputation without extra tools
- Bounce shield and inbox rotation: protects your campaign by distributing sends across multiple mailboxes and avoiding bounce limits
- AI email writer and custom snippets: speeds up personalized email creation with AI-generated text and dynamic personalization
- Condition-based follow-up sequences: send follow-ups based on opens, clicks or replies using branching logic
- A/B testing: test up to five variations of subject lines or content to discover top-performing messages
- Deliverability monitor and click tracking: tracks placement trends and manages custom tracking domains to measure campaign health
- Integration add-on (API/CRM/etc): connects with tools like HubSpot, Pipedrive, Google Sheets, Zapier, and provides a dedicated agency panel
Pricing
Plans start around $20/month for the Cold Email tier (500 prospects) and agency pricing begins near $27/month per client add-on; all features are included with pay-per-prospect scaling.
Considerations
✅ Simplifies cold email setup with inbox warming and bounce protection
✅ Powerful personalization and sequencing with AI and conditional logic
✅ Supports unlimited email accounts and team members at no extra per-user charge
❌ Scaling can get costly as you add more prospects or agency clients
❌ Analytics are functional but limited in customization
❌ Interface, while clean, feels dated compared to newer UI-first tools
❌ Customer support varies in response time according to some reviews
Why it’s better than Mailreef
Because Woodpecker automates deliverability techniques, multi-inbox sending, and AI-driven outreach all in one mature platform, which beats Mailreef’s limited infrastructure focus.
Real user feedback
“Very easy to use, numerous features including warm up email and email tracking”
“Support is responsive, and deliverability is much better than other tools I’ve tried”
“Dashboard interface is easy to use… reporting is solid”
Try Woodpecker for free today.
Maildoso
Maildoso is a cold email outreach platform that provides ready-to-go domains, inboxes, and email infrastructure to help B2B teams get started quickly. It’s designed for users who want high-volume sending and reputation monitoring without handling technical setup. However, concerns around deliverability and lack of DNS control may limit its long-term appeal.
Top features
- SPF, DKIM, and DMARC checks: verifies authentication settings for better deliverability.
- Pre-configured inboxes and domains: provides mailboxes purpose-built for cold outreach.
- Domain forwarding: redirects domain traffic as needed for infrastructure control.
- Master inbox: consolidates replies across multiple sending addresses.
- Mailbox reputation checks and inbox placement tracking: monitors domain health and delivery performance daily.
Pricing
Pricing starts at $100/month for 32 mailboxes and 8 domains; $166/month covers 68 mailboxes and 17 domains; $733/month includes 400 mailboxes and 100 domains.
Considerations
✅ Infrastructure is fully managed, no technical setup needed
✅ Scales easily for high-volume cold email teams
❌ No DNS access limits customization and external integration
❌ Some users report major deliverability issues despite safeguards
❌ Default domain replacements (.click, .xyz) may hurt reply rates
❌ Support is reactive and portal usability has been criticized
Why it’s better than Mailreef
Because Maildoso offers mailbox reputation monitoring, daily placement checks, and hands-off domain management, which go beyond Mailreef’s basic warmup.
Real user feedback
“Even with all the preventative measures, our inboxes still got affected—could be the niche, could be Maildoso.”
“We’re not allowed to configure DNS, so we can’t connect to other services.”
“All domains were burned in a single day… replacements were .click/.xyz instead of .com.”
Warmy.io
Warmy.io is a warmup and deliverability platform made for teams and agencies running high-volume cold outreach. It includes deep testing tools, mailbox health monitoring, and integrations with tools like Google Postmaster. While powerful, the platform may feel complex to new users and lacks mobile accessibility.
Top features
- Email warmup: gradually increases sending volume to build trust with inbox providers.
- Deliverability insights: identifies sending issues and flags potential spam triggers.
- Email seed list testing: sends test emails across multiple providers to check inbox placement.
- Google Postmaster integration: connects directly to Google’s deliverability tool for Gmail-specific insight.
- API access: allows developers to integrate warmup and monitoring into other tools and workflows.
Pricing
Starter plan is $49/month for 100 warmups per day; Business starts at $129/mailbox; Premium at $189/mailbox; Expert at $279/mailbox; Platinum at $429/mailbox for up to 5,000 warmups daily.
Considerations
✅ Strong deliverability testing tools and deep warmup functionality
✅ Google Postmaster support included in higher tiers
❌ No mobile app or mobile-friendly dashboard
❌ Learning curve is steep for beginners unfamiliar with warmup or seed testing
❌ API lacks flexibility for complex integrations
❌ Reporting and dashboards are not highly customizable
Why it’s better than Mailreef
Because Warmy.io offers significantly more advanced testing, warmup volume, and Gmail-specific insights than Mailreef provides.
Real user feedback
“A more flexible API would be welcome, but it’s still a highly recommended tool for any team.”
“Although Warmy.io has excellent capabilities, the analytics dashboard might be more thorough.”
Mailscale
Mailscale helps cold email users instantly generate many inboxes and domains with full setup, making large-scale outreach easier and more reliable. It’s tailored for those who want fast deployment and deliverability safeguards without manual configuration. Support is strong, but unexpected domain costs and slow warm-up may frustrate some users.
Top features
- Automatically create up to 1,000 email accounts: quickly spin up many mailboxes across domains for cold campaigns.
- Secondary domain purchasing: buy new domains inside the platform to decentralize sending infrastructure.
- DKIM, DMARC and SPF setup: automatically configures essential email authentication to protect deliverability.
- Email forwarding: consolidate messages in a master inbox to track replies from all accounts.
- Email inbox warm-up: incremental sending process builds sender reputation over several weeks.
Pricing
Solopreneur starts at $63/month for 2,000 prospects and up to 15 inboxes; Business is $95/month for 10,000 prospects and 50 inboxes; Enterprise is $199/month for 30,000 prospects and 200 inboxes.
Considerations
✅ Fast and painless inbox and domain setup with automated DNS configuration
✅ Deliverability guarantee and strong customer support as reported by users
❌ Domain pricing isn’t transparent upfront and can exceed expectations
❌ Warm-up can take 2–3 weeks, slower than some competitors
❌ Lacks valuable outreach features like LinkedIn integration or email analytics
Why it’s better than Mailreef
Because Mailscale automates large-scale inbox provisioning, setup, and deliverability protection, which are features missing in Mailreef.
Real user feedback
“Mailscale made setup a breeze… I was done in 10 minutes.”
“Their domain costs weren’t clear until I subscribed—they were higher than expected.”
“Warm-up can take 2–3 weeks, which is slower than most.”
Mailforge
Mailforge is a tool that helps agencies and sales teams create multiple domains and mailboxes for high deliverability across cold email campaigns. It provides infrastructure automation, built-in warm-up, and integration options to streamline outreach operations. Though newer, it offers competitive pricing and solid deliverability support.
Top features
- Email warm-up: automatically warms new mailboxes to build sender reputation
- Unique email content with ChatGPT: generates varied email copy for personalization
- Unified inbox for outreach: manage replies across all connected campaigns in one place
- Webhooks and API integrations: connect Mailforge to other platforms or internal workflows
- Email validation before sending: removes invalid addresses to reduce bounces
Pricing
Pro plan is $48/month for up to 1,000 active contacts and 5,000 emails Growth plan is $96/month for 10,000 contacts and 50,000 emails Both priced in USD only.
Considerations
✅ Automates domain and inbox setup including DNS and warm-up
✅ ChatGPT content generation improves email variation
❌ Analytics and reporting could be more detailed
❌ No LinkedIn outreach or dialer built in
❌ No prices in other currencies
❌ Interface and analytics are less mature than established tools
Why it’s better than Mailreef
Because Mailforge delivers auto‑warm-up, unified campaign management, and AI‑powered content at a more predictable price.
Real user feedback
“The user interface is way too complex and needs to be revamped.”
“Better reporting & analytics would help, plus LinkedIn automation/dialer.”
Conclusion
Mailreef can help you bypass mailbox and domain caps and make email service providers love your content. But there are a few issues. There is a lack of real social proof as there are no reviews that would verify Mailreef’s claims. The second is the lack of a free plan or trial, so you have to spend $250 just to try this tool out.
But what if you could get the same core features and the ability to dodge the spam filters in a more capable and affordable tool? Woodpecker has everything you need to ensure that you get your uniquely crafted email delivered straight to prospects’ inboxes.