Mails

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.

Freemium Enterprise 70/100
#50 in Sales (50 tools)
Added 4 months ago
18284 directory views this week

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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Key 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

Free Tier Available

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

Scale outreach without per-inbox limits by connecting unlimited email accounts.
Improve deliverability and inbox placement with combined mailbox and campaign warmup systems and email verification.
Save time with AI-generated email sequences and automation that runs campaigns on autopilot.
Increase replies and revenue through optimized sending patterns, inbox rotation and campaign warmup.
Flexible pricing tiers and a free plan make it easy to start and upgrade as needs grow.

Limitations

Free plan is restricted to Gmail & Google Workspace accounts only.
Lead-provisioning and Done-For-You (DFY) services are a separate paid offering.
No public API is mentioned in the available product information.
Plans are organized around monthly "Active Contacts" which may require planning for campaigns spanning multiple months (though first-email counting rules apply).

Frequently Asked Questions

What is Mails.ai?
Mails.ai is a tool specialized for cold email outreach at scale that focuses on high deliverability and generous limits to help businesses grow.
Can I connect unlimited email accounts?
Yes — Mails.ai allows you to connect as many email accounts as you need from any provider; the platform does not charge per inbox.
Can I upload unlimited contacts?
Yes — you can upload as many contacts as you want. Monthly plan limits are based on Active Contacts (unique email IDs contacted in a month).
How many emails can I send every day?
Mails.ai states it does not set a specific daily send limit; plans are structured around how many new unique active contacts you outreach to each month.
What are Active Contacts?
Active Contacts are unique email addresses you first contact within a month. The counter resets monthly and only the first email to a contact counts toward that month's limit. Pro plan offers Unlimited Active Contacts.
Is Mails.ai fully automated?
After you upload leads and set up campaigns (with guidance from the AI Assistant), campaigns run on autopilot; optional DFY services are available for additional help.
What is the difference between Mailbox Warmup and Campaign Warmup?
Mailbox Warmup creates natural-seeming conversations with a warmup pool to improve sender reputation, while Campaign Warmup focuses on sending target campaign content to related accounts and training filters via non-spam feedback to improve content-specific deliverability.
Can Mails.ai provide leads for me?
Yes — lead provisioning is available as part of the Done-For-You (DFY) service for an additional cost; contact support to learn more.

Getting Started

  1. 1 Sign up for a free account (no credit card required) and log in.
  2. 2 Connect your email account(s) — supports Gmail/Google Workspace, Outlook, Zoho and custom SMTP accounts.
  3. 3 Upload and verify your contacts using the built-in email verifier.
  4. 4 Use the AI Email Writer to create a sequence or configure your own campaign, set daily limits and warmup preferences.
  5. 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

Available: No

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