Mails.ai is an AI-driven cold email automation platform built for businesses that need to scale their outreach without sacrificing deliverability or personalization. Trusted by thousands of users worldwide, Mails.ai combines advanced artificial intelligence with unlimited sending infrastructure to help sales teams, marketing agencies, and growth-focused startups generate more leads and book more meetings.
AI Email Writer
Mails.ai’s intelligent email writer eliminates the blank page problem. Provide basic campaign details—target audience, value proposition, and desired outcome—and the AI generates personalized, professional email copy in seconds. The system creates entire sequences including subject lines, body copy, and follow-up messages optimized for engagement. This feature is particularly valuable for teams running multiple campaigns simultaneously or testing different messaging angles without dedicating hours to copywriting.
Unlimited Email Infrastructure
Unlike platforms that charge per mailbox or cap sending limits, Mails.ai allows unlimited email account connections across all plans, including the free tier. This architectural advantage enables proper inbox rotation strategies essential for maintaining sender reputation at scale. Teams can connect dozens of accounts, distribute sending volume naturally, and avoid the single-point-of-failure risk that comes with over-relying on one inbox.
Real-Time Email Verification
Every contact list contains invalid addresses that damage sender reputation and inflate bounce rates. Mails.ai’s built-in verification system checks email validity in real-time before sending, catching syntax errors, inactive domains, and disposable addresses. Paid plans include 2,000 to 50,000 monthly verifications depending on tier, ensuring clean lists and protecting deliverability metrics.
Inbox Rotation & Deliverability
Mails.ai’s inbox rotation automatically distributes outgoing emails across connected accounts based on configurable rules and daily sending limits. This prevents any single mailbox from appearing spammy to email providers while maintaining consistent outreach volume. Combined with unlimited email warmup—which gradually builds sender reputation through authentic engagement patterns—inbox rotation significantly improves inbox placement rates.
Advanced Automation Capabilities
Set up campaigns once and let Mails.ai handle the rest:
- Automated Follow-Ups - Configure multi-touch sequences that continue engagement without manual intervention
- Daily Sending Limits - Control volume per account to maintain natural sending patterns
- Smart Scheduling - Optimize send times based on recipient time zones and engagement data
- Spintax Support - Rotate phrases and sentences to increase uniqueness and avoid spam filters
- Conditional Logic - Trigger different sequences based on recipient behavior and engagement
The platform autonomously manages contact uploads, email verification, sequence deployment, and inbox monitoring, freeing teams to focus on conversations with interested prospects rather than operational tasks.
Analytics & Performance Tracking
Mails.ai provides granular visibility into campaign performance through advanced reporting dashboards. Track open rates, click-through rates, reply rates, and bounce metrics across campaigns, individual emails, and sender accounts. Custom tracking domains mask click tracking under your own domain, maintaining brand consistency and improving link trust. Analytics identify which messaging resonates, which accounts perform best, and where bottlenecks exist in your funnel.
Pricing & Plans
Mails.ai offers four tiers with transparent, all-inclusive pricing:
Free Plan
- Unlimited email accounts and warmup
- Best for Gmail and Google Workspace accounts
- Limited to basic features
Startup Plan - $24/month (annually) or $49/month
- 1,000 active contacts per month
- 2,000 email verifications monthly
- Unlimited campaigns and team members
- AI email writer, custom tracking domain, advanced reports
Growth Plan - $49/month (annually) or $99/month
- 5,000 active contacts per month
- 10,000 email verifications monthly
- All Startup features included
Pro Plan - $99/month (annually) or $199/month
- Unlimited active contacts
- 50,000 email verifications monthly
- All features included, maximum scale
Annual subscriptions save 50% compared to monthly billing. All paid plans include ticket support and access to Done-For-You services.
Done-For-You (DFY) Service
For teams without internal cold email expertise or bandwidth, Mails.ai offers a DFY service where their specialists handle campaign setup, configuration, and ongoing optimization. This white-glove approach ensures best practices are followed from day one, particularly valuable for businesses launching their first outbound programs or scaling from small to enterprise-level campaigns.
Security & Compliance
Mails.ai maintains transparent privacy policies detailing data collection, usage, and protection practices. Clear terms of service cover acceptable use, fees, warranties, and indemnification. The platform prioritizes user trust through documented security practices and responsible data handling, essential considerations for businesses managing sensitive prospect information.
Best For
Mails.ai excels for:
- Sales teams running high-volume cold outreach who need unlimited accounts and sending capacity
- Marketing agencies managing multiple client campaigns requiring separate infrastructure
- Startups and SMBs seeking affordable access to enterprise-grade automation features
- Growth teams testing multiple messaging strategies across different audience segments
- Anyone prioritizing deliverability and needing unlimited warmup without per-account fees
Support & Resources
Mails.ai provides responsive support through email, phone, and chat channels. A comprehensive Help Center offers documentation on setup, troubleshooting, and best practices. Paid plan users receive priority ticket support with faster response times. The platform’s blog regularly publishes guides on cold email strategy, deliverability optimization, and industry trends.
Summary
Mails.ai delivers exceptional value through its combination of unlimited infrastructure, AI-powered content generation, and comprehensive automation features at competitive price points. The platform removes traditional bottlenecks—per-account fees, manual copywriting, and complex setup—that prevent teams from scaling outreach effectively. Whether launching a first campaign or managing enterprise-level programs across dozens of accounts, Mails.ai provides the tools and flexibility needed to generate pipeline through cold email.
Frequently Asked Questions
How is the support staff? Mails.ai’s support team is responsive and knowledgeable, offering assistance through multiple channels including email, phone, and chat. Paid plans receive priority support with faster response times. The Help Center provides extensive documentation for self-service troubleshooting.
Will they set up the tool for us? Yes. Mails.ai offers a Done-For-You (DFY) service where their team assists with account setup, campaign configuration, and ongoing optimization. This is particularly useful for teams new to cold email or lacking internal expertise.
Is a free trial available? Mails.ai provides a permanently free plan that includes unlimited email accounts and warmup for Gmail and Google Workspace. This allows users to test the platform’s core functionality before upgrading to access higher contact limits and advanced features.
Best for whom? Mails.ai is ideal for sales teams, marketing agencies, startups, and growth-focused businesses of all sizes that want to automate and scale cold email outreach with unlimited sending capacity, AI-powered content, and advanced deliverability optimization.
Key Features
- AI Email Writer
- Unlimited Email Accounts
- Real-Time Email Verification
- Inbox Rotation
- Email Warmup
- Automated Follow-Ups
- Custom Tracking Domain
- Advanced Analytics & Reports
- Spintax Support
- Done-For-You (DFY) Service