Create targeted campaigns, automate email campaigns, and analyze performance for maximum ROI.
13M visits/mo+3.6%#7 Business & Marketing
Mails.ai
Automate campaigns, connect multiple email accounts, and create effective messages with an AI-powered email writer.
$0.00Starting price
11KMonthly visits
17Popularity
About Mails.ai
Mails.ai is the ideal solution for businesses that want to streamline their cold email outreach. Our AI-powered platform helps you get the most out of your campaigns by providing an array of automated tools. Connect unlimited email accounts from any provider, automate campaigns and follow-ups, and use our AI-powered email writer to create effective messages quickly. With Mails.ai, you can also optimize email sending patterns to ensure maximum deliverability and responses. Automate your cold email outreach with Mails. Use Cases And Features 1. Automate campaigns and follow-ups. 2. Connect unlimited email accounts. 3. Use AI-powered email writer to create effective messages.
Key features
- Automate campaigns and follow-ups
- Connect unlimited email accounts from any provider
- Use AI-powered email writer to create effective messages quickly
- Optimize email sending patterns for maximum deliverability and responses
- Streamline cold email outreach
- Create engaging newsletters faster and more efficiently
Use cases
- Automate cold email outreach for businesses
- Streamline email marketing campaigns with AI-powered tools
- Connect multiple email accounts from any provider to manage email outreach
Pros
- Provides a dedicated inbox for AI agents via a single API call, enabling real-time sending and receiving of emails
- Enforces strict rules at the API level to block prohibited activities like cold outreach, protecting sender reputation
- Includes a six-category prompt-injection scanner for every inbound email, flagging high-risk content before processing
- Offers structured reply events with injection scores, sender reputation, and optional intent/entity classification for better automation
- Supports transactional and operational email workflows while preventing misuse through real-time policy enforcement
Cons
- Cold email outreach is explicitly blocked at the API level, limiting its use for traditional cold email campaigns
- Metered pricing model may introduce variability in costs based on usage volume, which could be unpredictable for some users
- Requires integration with existing systems via API, which may involve technical setup for non-developers
- Opt-in classification features add additional costs, which may not be suitable for all use cases
Frequently asked questions about Mails.ai
What does Mails.ai do?
Mails.ai provides an AI-powered email API and infrastructure that allows AI agents to send, receive, and process emails in real time. It enforces rules at the API level to prevent unauthorized cold outreach and includes features like injection scanning, reputation scoring, and structured event data.
Who is Mails.ai suitable for?
Mails.ai is designed for businesses and developers who need to integrate email capabilities into AI agents or automated systems, such as customer support bots, scheduling assistants, or transactional email handlers.
How does Mails.ai handle cold email outreach?
Mails.ai blocks cold email outreach at the API level by refusing to send messages flagged as promotional or unsolicited, ensuring compliance with email policies without relying on user settings or acceptable-use clauses.
Does Mails.ai offer integrations with other tools?
Yes, Mails.ai provides an API and SDKs in TypeScript, Python, and MCP, allowing integration with various platforms and workflows. It also includes a reputation graph and structured reply events for enhanced functionality.
What pricing model does Mails.ai use?
Mails.ai operates on a metered pricing model where users pay per event, such as sends or inbound emails, rather than a fixed monthly fee. There are also monthly tiers available, including a free tier.
How can I get started with Mails.ai?
To get started, users can obtain an API key from the Mails.ai website and follow the provided documentation to integrate the API into their systems. The platform offers a live demo and sandbox environment for testing.
Mails.ai traffic & engagement
mails.ai · third-party estimates from Similarweb
Data as of Sep 2026Full AI website ranking →
Monthly visits · Sep 202611K-24.7% MoM12-month high 22K (Jul 2026)
Rank among AI websites#4,335▼ 341 vs last monthof 8,652 tools on aitoolnavio™
Top marketUnited States29%Top 5 countries bring 79% of visits
Average visit6sTime on site per visit
Pages per visit1.52Average pages viewed
Bounce rate46%Leave after one page · lower is better
Similarweb global rank#2,123,698#1,269,260 in United States
Traffic trend
Last 4 months · grows by one month every month
- Jun 202622K
- Jul 202622K+0.7%
- Aug 202615K−34.2%
- Sep 202611K−24.7%
Top countries
Share of visits · estimated visits
Other countries: 20.6%
Compared with similar tools
Business & Marketing · Sep 2026
Traffic figures are third-party estimates, good for scale and trends; they can differ from a company's own numbers. Updated monthly.
