Privacy Policy

Last updated: 12/16/2025

1. Introduction

At Lett ("we," "our," or "us"), we are committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our email and calendar automation service ("Service").

Lett is an intelligent automation platform that uses AI agents to manage your email communications, schedule meetings, handle calendar conflicts, and perform administrative tasks. We understand that you entrust us with sensitive information, and we take that responsibility seriously.

2. Information We Collect

2.1 Information You Provide

We collect information that you provide directly to us:

  • Account information: name, email address, password, and profile information
  • Payment information: billing address, payment method details (processed through secure third-party payment processors)
  • Preferences: settings, automation rules, and notification preferences
  • Communications: messages you send to us, feedback, and support requests

2.2 Email and Calendar Data

To provide our Service, we access and process:

  • Email content: messages, attachments, sender/recipient information, and metadata
  • Calendar data: events, meetings, availability, attendee information, and calendar metadata
  • Contact information: email addresses and names from your contacts and communications
  • Usage patterns: how you interact with emails and calendar events

This data is accessed through secure API connections with your email and calendar providers (e.g., Gmail, Outlook) with your explicit authorization.

2.3 Automatically Collected Information

We automatically collect certain information when you use our Service:

  • Device information: device type, operating system, browser type, and device identifiers
  • Log data: IP address, access times, pages viewed, and actions taken within the Service
  • Usage data: features used, frequency of use, and interaction patterns
  • Performance data: response times, error logs, and system performance metrics

2.4 Third-Party Information

We may receive information about you from third-party services you connect to Lett, such as calendar providers, email services, and other integrated applications.

3. How We Use Your Information

We use the information we collect to:

  • Provide, maintain, and improve the Service
  • Enable our AI agents to manage your email and calendar
  • Schedule meetings, resolve conflicts, and coordinate availability
  • Draft email responses and categorize communications
  • Generate daily briefings and summaries
  • Process transactions and send related information
  • Send technical notices, updates, and support messages
  • Respond to your comments, questions, and requests
  • Monitor and analyze usage patterns and trends
  • Detect, prevent, and address technical issues and security threats
  • Personalize your experience and provide relevant content

Important: We do not use your email or calendar data to train AI models. Your data is used solely to provide the Service to you.

4. Data Processing and AI Agents

Our AI agents process your email and calendar data to:

  • Understand context and intent in communications
  • Identify important messages and prioritize them
  • Draft appropriate responses based on your preferences
  • Schedule meetings by analyzing availability and preferences
  • Resolve calendar conflicts automatically
  • Make phone calls on your behalf when authorized
  • Generate summaries and briefings

Agents operate within parameters you set and will request your confirmation for important decisions. All processing occurs on secure servers with enterprise-grade encryption.

5. Data Storage and Security

We implement industry-standard security measures to protect your information:

  • Encryption in transit: All data transmitted between your devices and our servers is encrypted using TLS/SSL
  • Encryption at rest: Your data is encrypted when stored on our servers
  • Access controls: Strict access controls limit who can access your data
  • Regular security audits: We conduct regular security assessments and penetration testing
  • Secure infrastructure: Our servers are hosted on secure, compliant cloud infrastructure
  • Authentication: Multi-factor authentication options for account security

While we implement robust security measures, no method of transmission over the Internet or electronic storage is 100% secure. We cannot guarantee absolute security but are committed to protecting your data to the best of our ability.

6. Data Sharing and Disclosure

We do not sell your personal information. We may share your information only in the following circumstances:

6.1 Service Providers

We may share information with trusted third-party service providers who perform services on our behalf, such as:

  • Cloud hosting and infrastructure providers
  • Payment processors
  • Email delivery services
  • Analytics and monitoring services

These providers are contractually obligated to protect your information and use it only for the purposes we specify.

6.2 Legal Requirements

We may disclose your information if required by law or in response to valid requests by public authorities (e.g., court orders, subpoenas).

6.3 Business Transfers

In the event of a merger, acquisition, or sale of assets, your information may be transferred as part of that transaction. We will notify you of any such change in ownership.

6.4 With Your Consent

We may share your information with your explicit consent or at your direction.

7. Third-Party Integrations

Lett integrates with third-party services such as email providers (Gmail, Outlook) and calendar services (Google Calendar, Outlook Calendar). When you connect these services:

  • We access data through secure API connections authorized by you
  • Your use of third-party services is subject to their privacy policies
  • We only access the minimum data necessary to provide our Service
  • You can revoke access at any time through your account settings or the third-party service

We are not responsible for the privacy practices of third-party services. Please review their privacy policies to understand how they handle your data.

8. Data Retention

We retain your information for as long as necessary to provide the Service and fulfill the purposes described in this Privacy Policy, unless a longer retention period is required or permitted by law.

When you delete your account, we will:

  • Delete your account information and preferences
  • Remove your email and calendar data from our servers
  • Retain certain information as required by law or for legitimate business purposes (e.g., transaction records)

Some information may remain in backup systems for a limited time before being permanently deleted.

9. Your Rights and Choices

You have the following rights regarding your personal information:

  • Access: Request access to the personal information we hold about you
  • Correction: Request correction of inaccurate or incomplete information
  • Deletion: Request deletion of your personal information
  • Portability: Request a copy of your data in a portable format
  • Opt-out: Opt out of certain data processing activities
  • Account settings: Update your preferences and privacy settings at any time
  • Revoke access: Disconnect third-party integrations at any time

To exercise these rights, please contact us at privacy@lettmail.com. We will respond to your request within a reasonable timeframe and in accordance with applicable law.

10. Children’s Privacy

Lett is not intended for children under 18 years of age. We do not knowingly collect personal information from children. If you believe we have collected information from a child, please contact us immediately, and we will take steps to delete such information.

11. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. These countries may have data protection laws that differ from those in your country.

We ensure that appropriate safeguards are in place to protect your information in accordance with this Privacy Policy, regardless of where it is processed.

12. California Privacy Rights

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA):

  • Right to know what personal information is collected, used, shared, or sold
  • Right to delete personal information held by businesses
  • Right to opt-out of the sale of personal information (we do not sell your information)
  • Right to non-discrimination for exercising your privacy rights

To exercise these rights, please contact us at privacy@lettmail.com.

13. GDPR Rights (European Users)

If you are located in the European Economic Area (EEA), you have additional rights under the General Data Protection Regulation (GDPR):

  • Right to access your personal data
  • Right to rectification of inaccurate data
  • Right to erasure (“right to be forgotten”)
  • Right to restrict processing
  • Right to data portability
  • Right to object to processing
  • Right to withdraw consent
  • Right to lodge a complaint with a supervisory authority

To exercise these rights, please contact us at privacy@lettmail.com.

14. Cookies and Tracking Technologies

We use cookies and similar tracking technologies to:

  • Maintain your session and authentication state
  • Remember your preferences and settings
  • Analyze usage patterns and improve the Service
  • Provide personalized content and features

You can control cookies through your browser settings. However, disabling cookies may limit your ability to use certain features of the Service.

15. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any material changes by:

  • Posting the new Privacy Policy on this page
  • Updating the “Last updated” date
  • Displaying a prominent notice within the Service
  • Sending you an email notification (for significant changes)

Your continued use of the Service after any changes constitutes acceptance of the updated Privacy Policy.

16. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us at:

Lett Privacy Team
Email: privacy@lettmail.com
Website: https://lettmail.com

We will respond to your inquiry within a reasonable timeframe and in accordance with applicable law.