Powerful email keyword search and discovery tool for legal professionals, investigators, and compliance teams. Search through thousands of emails in seconds with advanced Boolean logic and precise filtering.
Start 30-Day Free TrialSearch for single words, phrases, or complex Boolean expressions. Find emails containing specific terms with proximity operators, wildcard matching, and case-sensitive options. Build sophisticated search queries with AND, OR, NOT operators and parenthetical grouping.
Works seamlessly with all major email formats: MSG, EML, MIM, EMLX, PST, and MBOX files. No need for multiple tools - MailTerrier handles them all, making it perfect for cross-platform email investigations and litigation support.
Scan gigabytes of email data in minutes. After initial indexing, search results appear in seconds. Built for performance with optimized algorithms that handle massive email archives without slowing down your system.
Create complex search rules with field-specific filters. Search within subject lines, body text, sender, recipient, date ranges, or attachment names. Exclude unwanted results with negative filters. Example: Find "contract" AND "2024" in body with less than 2 words between, EXCLUDING emails with "draft" in subject.
Export search results and email content in multiple formats: PDF, TEXT, TIFF, EML, MSG. Generate detailed reports in PDF, XLS, or DOC with complete email properties, metadata, and search criteria for court-ready documentation.
Preview emails instantly with double-click access. View full email headers, metadata, attachments, and embedded images. Print selected emails directly from the interface. Maintain chain of custody with comprehensive audit trails.
All searches happen locally on your computer. No cloud uploads, no data transmission. Your sensitive emails remain completely private and secure, meeting strict confidentiality requirements for legal and investigative work.
Automatically saves all search queries and results. Return to previous searches instantly. Track investigation progress, document search methodology, and maintain comprehensive records of discovery efforts.
Automatically locate all email files on your computer or specify exact folders. Recursively scan directories to find every MSG, PST, MBOX, and other email file. Perfect for comprehensive digital forensics investigations.
Complex Legal Discovery Scenario:
"Find all emails from 2019-2024 containing the words 'settlement' and 'agreement' within 5 words of each other in the body, where the sender domain is '@lawfirm.com' OR '@corporate.com', but EXCLUDE any emails with 'confidential' in the subject line or any emails sent on weekends."
MailTerrier handles this in seconds.
eDiscovery for litigation, responsive document identification, privilege review, and producing email evidence for court proceedings.
Internal investigations, employee misconduct cases, intellectual property theft, and compliance violations.
Breach investigations, phishing analysis, malware tracking, and security incident response.
GDPR, HIPAA, SOX compliance audits, data retention policy enforcement, and regulatory reporting.
Employment disputes, workplace harassment investigations, wrongful termination cases, and personnel records review.
Criminal investigations, subpoena response, FOIA requests, and evidence collection for prosecutions.
Email archiving, legacy data migration, knowledge base creation, and information governance.
M&A email review, contract discovery, business relationship analysis, and corporate intelligence.
Intuitive interface that legal professionals and investigators can use immediately. No technical training required. Simple enough for paralegals, powerful enough for forensic experts.
One-time purchase at $199. No subscriptions, no per-search fees, no user limits. Unlimited searches on unlimited email archives. Compare to enterprise eDiscovery platforms costing thousands monthly.
What takes hours manually takes minutes with MailTerrier. Search 1GB PST files in minutes. Find needle-in-haystack emails instantly. Reduce discovery costs by 80% or more.
Generate professional reports with complete audit trails. Export with preserved metadata and chain of custody. Meet legal standards for electronic evidence presentation.
Works directly with email files - no need for Outlook, Thunderbird, or any email client. Perfect for analyzing archived emails, legacy systems, or forensic images.
Deploy on individual workstations or Citrix environments. Site licenses available for law firms and corporate legal departments. Centralized or distributed deployment options.
Professional forensic email search tool at an affordable price
One-time purchase • Lifetime license
Free for personal, non-commercial use at home
"We've been using Mail Terrier for a legal matter to search outlook email by keyword and are happy with the results. It works fast and is powerful enough for a complicated macro task. Highly recommend this app for key word search."
"I had to find all emails related to a particular case for the judge and opposing council. I would not be able to do that without Mail Terrier. Manual email search by keyword would take hours. It scanned my 1Gb PST file and produced the list of necessary emails in minutes! Thank you very much."
"As a litigation support specialist, I've used many eDiscovery tools. MailTerrier gives me 90% of the functionality at 5% of the cost. For small to mid-sized cases, it's perfect. The Boolean search is sophisticated enough for complex discovery requests."
"We handle internal HR investigations and needed a tool that could quickly search through employee email archives. MailTerrier solved our problem without the enterprise software complexity. Deployment was instant, and our investigators learned it in minutes."
Initial scanning depends on file size and system specs. A typical 1GB PST file scans in 5-10 minutes. After initial indexing, searches return results in seconds.
Yes. MailTerrier can scan entire folders or your whole computer, finding and searching all email files across multiple accounts, clients, and formats in one operation.
MailTerrier can read standard PST files. For encrypted files, you'll need to decrypt them first using Outlook or PST password recovery tools.
Yes. All export formats preserve complete email metadata including sender, recipient, dates, headers, and attachment information. Reports include full property lists suitable for legal documentation.
No limits. Search through millions of emails across hundreds of gigabytes. Performance depends on your hardware, but MailTerrier is optimized for large-scale searches.
No. MailTerrier works directly with email files and doesn't require any email client. This makes it perfect for forensic analysis where you're working with archived or extracted email data.
Join thousands of legal professionals, investigators, and compliance teams who trust MailTerrier for forensic email search.
Download 30-Day Free TrialNo credit card required • Full functionality • Windows 2000-11