Atlan vs MailStore Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

Atlan

0.0 (0 reviews)

Atlan is a collaborative data governance and metadata management platform that helps your team discover, manage, and trust data through an automated, user-friendly interface for modern data stacks.

Starting at --
Free Trial NO FREE TRIAL
VS

MailStore

0.0 (0 reviews)

MailStore provides specialized email archiving software solutions for small to medium-sized businesses to manage data loss prevention, compliance requirements, and server storage optimization effectively.

Starting at $??/mo
Free Trial 30 days

Quick Comparison

Feature Atlan MailStore
Website atlan.com mailstore.com
Pricing Model Custom One_time
Starting Price Custom Pricing $??/month
FREE Trial ✘ No free trial ✓ 30 days free trial
Free Plan ✘ No free plan ✘ No free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment saas on-premise desktop
Integrations Snowflake Databricks dbt Tableau Power BI Looker Slack Amazon S3 Google BigQuery PostgreSQL Microsoft 365 Exchange Server Google Workspace Outlook MDaemon IceWarp Kerio Connect IMAP POP3
Target Users mid-market enterprise small-business mid-market
Target Industries legal finance healthcare
Customer Count 0 0
Founded Year 2018 2006
Headquarters Singapore, Singapore Viersen, Germany

Overview

A

Atlan

Atlan acts as a collaborative home for your data team, bringing together data discovery, cataloging, and governance into one workspace. You can automatically crawl your entire data stack—from Snowflake and Databricks to Tableau and Power BI—to create a unified view of your data assets. It eliminates the manual work of documenting data by using AI to suggest descriptions and identify sensitive information across your ecosystem.

You can track data lineage visually to see exactly how data flows from source to dashboard, helping you troubleshoot broken reports in minutes. The platform is built for collaboration, allowing you to discuss data assets, assign owners, and manage access requests directly within the tools you already use like Slack. It helps data engineers, analysts, and business users stay aligned on data definitions and quality without constant back-and-forth meetings.

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MailStore

MailStore helps you take full control of your company's email data by creating 1:1 copies of all emails in a central archive. You can secure large volumes of data permanently while meeting complex legal retention requirements and GDPR obligations. By offloading emails from your active server to the archive, you significantly reduce the workload on your IT infrastructure and eliminate the need for unreliable PST files.

You can empower your team with lightning-fast full-text searches for emails and attachments, accessible directly through Outlook or a web browser. Whether you use Microsoft 365, Google Workspace, or an on-premise Exchange server, the software integrates into your existing environment. It is specifically designed for small and medium-sized businesses looking for a reliable way to prevent data loss and simplify backup processes.

Overview

A

Atlan Features

  • Automated Data Catalog Discover your data instantly with an automated crawler that indexes metadata from your entire modern data stack.
  • End-to-End Lineage Map your data's journey from source to BI tool to understand dependencies and perform impact analysis visually.
  • Active Governance Apply security tags and access policies automatically across your ecosystem to ensure compliance without slowing down your team.
  • AI-Powered Documentation Generate READMEs and column descriptions automatically using built-in AI to keep your data documentation up to date.
  • Collaboration Center Share data assets and discuss definitions with your team using integrated social features and Slack notifications.
  • Data Quality Monitoring View trust signals and quality scores directly on your data assets so you know which tables are reliable.
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MailStore Features

  • Centralized Archiving. Copy all existing and future emails into a single, secure archive to prevent accidental or intentional data deletion.
  • Fast Full-Text Search. Find any email or attachment in seconds using an intuitive search interface that works directly within your Outlook ribbon.
  • Legal Compliance. Meet regulatory requirements like GDPR and HIPAA by maintaining tamper-proof email records with sophisticated auditing and retention policies.
  • Storage Optimization. Reduce your mail server storage requirements by up to 70% using advanced de-duplication and compression technologies.
  • Self-Service Access. Give your team the ability to restore their own deleted emails without ever needing to contact the IT helpdesk.
  • Flexible Deployment. Choose between an on-premise installation for total data sovereignty or a managed service through a certified provider.

Pricing Comparison

A

Atlan Pricing

M

MailStore Pricing

MailStore Server (5 Users)
$??
  • Permanent software license
  • Support for 5 user mailboxes
  • 1 year of Update Cover
  • Outlook and Web Access
  • Mobile device support
  • Full-text indexing

Pros & Cons

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Atlan

Pros

  • Intuitive interface feels like modern consumer software
  • Excellent automated lineage tracking across complex stacks
  • Strong integration with popular tools like Slack
  • Fast setup compared to legacy governance platforms

Cons

  • Pricing is high for smaller organizations
  • Initial metadata crawling can be resource intensive
  • Advanced customization requires a learning curve
A

MailStore

Pros

  • Extremely fast search capabilities for large archives
  • Simple installation process with minimal configuration
  • Reliable performance even with massive data volumes
  • Significantly reduces mail server backup times
  • Excellent value for money compared to competitors

Cons

  • Interface feels slightly dated and utilitarian
  • Limited advanced reporting for administrative tasks
  • Requires Windows environment for the server installation
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