Mails
Mails.ai is an AI-driven cold email outreach platform that automates large-scale campaigns with unlimited email accounts, warmup, deliverability optimization and an AI email writer to help businesses scale outreach and improve reply rates.
Mails is sales software teams evaluate for content & marketing. Use this page to review pricing, integration signals, and the best alternatives before you commit.
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Quick Overview
Best for: Content & Marketing
What it does
Sales software for decision-makers comparing workflow fit and alternatives.
Best fit
Content & Marketing
Pricing snapshot
Freemium from $0/mo
Next step
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Mails
Mails.ai is specialized cold-email software designed to run automated, AI-driven outreach at scale while maximizing deliverability. It targets businesses, sales teams and agencies that need to send large volumes of personalized cold emails without per-inbox charges. Core capabilities include an AI Email Writer that composes campaigns from a few inputs, unlimited email account connections, automated warmup systems (Mailbox Warmup and Campaign Warmup), email verification, inbox rotation and campaign automation. The product aims to let users upload large contact lists, set up campaigns quickly, and let the system run on autopilot to increase replies and revenue. Mails.ai also offers a Done-For-You (DFY) service for customers who want setup or lead-provisioning assistance.
Mails.ai is an AI-driven cold email outreach platform that automates large-scale campaigns with unlimited email accounts, warmup, deliverability optimization and an AI email writer to help businesses scale outreach and improve reply rates.
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Claim this listingKey Features
AI Email Writer
Automatically generates compelling, personalized email sequences and can set up campaigns from a few details provided by the user.
Unlimited Email Accounts
Connect an unlimited number of sender accounts from any provider; Mails.ai does not charge per inbox.
Automation & Campaigns
Upload and verify contacts, let the AI configure sequences, set daily limits and run automated follow-ups and campaign schedules.
Email Verification
Real-time email verification to maximize deliverability and engagement by removing invalid addresses.
Mailbox Warmup
Automated warmup that sends natural-seeming emails within a warmup pool to improve sender reputation and avoid promotion-only flags.
Campaign Warmup
Content-focused warmup that trains filters by sending campaign emails to related accounts and encouraging non-spam feedback to improve content deliverability.
Inbox Rotation
Rotate senders intelligently to reduce spam flags and increase inbox delivery across multiple accounts.
Unlimited Contacts & Scalability
Upload unlimited contacts and scale outreach; plans are structured around monthly "Active Contacts" rather than strict daily send caps.
Advanced Reporting & Custom Tracking Domain
Available on paid plans to monitor campaign performance and use a custom tracking domain for improved deliverability and branding.
Pricing
Forever Free plan with unlimited email accounts and warmup; restricted to Gmail & Google Workspace accounts. No credit card required.
Free
$0/mo- Unlimited Email Accounts
- Unlimited Email Warmup
- Support Ticket
- Restricted to Gmail & Google Workspace accounts
Startup
Starting from $24/mo- Unlimited Email Accounts
- Unlimited Email Warmup
- 1,000 Active Contacts / mo
- Unlimited Emails Monthly
Growth
Starting from $49/mo- Unlimited Email Accounts
- Unlimited Email Warmup
- 5,000 Active Contacts / mo
- Unlimited Emails Monthly
Pro
Starting from $99/mo- Unlimited Email Accounts
- Unlimited Email Warmup
- Unlimited Active Contacts / mo
- Unlimited Emails Monthly
Use Cases
Cold outbound sales
Create multi-step sequences to prospect and follow up with leads automatically to generate meetings and sales opportunities.
Lead nurturing at scale
Upload large contact databases and run personalized outreach campaigns to nurture and convert leads over time.
Agency/client outreach
Agencies can manage many sender accounts and campaigns across clients without per-inbox charges, using warmup and rotation to protect deliverability.
Deliverability optimization
Use mailbox and campaign warmup plus email verification to improve inbox placement for new and existing sender accounts.
Done-For-You (DFY) campaigns
For organizations that prefer hands-off setup, Mails.ai offers a paid DFY service that can provide leads and manage campaign setup.
Integrations
Google Workspace / Gmail
Connect Gmail and Google Workspace accounts as sender accounts (supported on free plan under restriction).
Outlook
Connect Outlook accounts for sending campaigns through Microsoft mailboxes.
Zoho
Connect Zoho mail accounts as senders.
Custom SMTP
Connect custom mail servers via SMTP to send from any provider not natively listed.
Benefits
Limitations
Frequently Asked Questions
What is Mails.ai?
Can I connect unlimited email accounts?
Can I upload unlimited contacts?
How many emails can I send every day?
What are Active Contacts?
Is Mails.ai fully automated?
What is the difference between Mailbox Warmup and Campaign Warmup?
Can Mails.ai provide leads for me?
Getting Started
- 1 Sign up for a free account (no credit card required) and log in.
- 2 Connect your email account(s) — supports Gmail/Google Workspace, Outlook, Zoho and custom SMTP accounts.
- 3 Upload and verify your contacts using the built-in email verifier.
- 4 Use the AI Email Writer to create a sequence or configure your own campaign, set daily limits and warmup preferences.
- 5 Launch the campaign and monitor responses and reports; optionally use the DFY service for help with setup or leads.
Support
Chat widget
Live chat support available on the site for sales and setup questions.
Support ticket
Support ticketing is available (listed as included across plans) for technical help.
Help Center / Docs
Help Center, roadmap, feature request pages and a knowledge base are listed in the site's resources.
Done-For-You (DFY) service
Paid service option to have the vendor set up campaigns and provide leads if needed.
API
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