November 18, 2025 • 12 min read

How to Archive iMessages for Legal Purposes

Whether you're involved in a lawsuit, divorce proceedings, employment dispute, or criminal case, text messages can serve as critical evidence. This comprehensive guide explains how to properly export, preserve, and present iMessages in a court-admissible format while maintaining chain of custody and metadata integrity.

Why Text Messages Are Important Legal Evidence

Text messages have become one of the most common forms of digital evidence in legal proceedings. Courts routinely accept text messages as evidence in:

However, simply taking screenshots isn't enough. To be admissible in court, text message evidence must meet specific legal and technical requirements.

Legal Requirements for Text Message Evidence

1. Authenticity

You must prove the messages are genuine and haven't been altered. This typically requires:

2. Chain of Custody

Document who had access to the evidence and when:

3. Relevance and Materiality

The messages must be relevant to your case and contain information that matters to the legal issue at hand.

4. Hearsay Considerations

Consult with your attorney about whether your messages might be considered hearsay and how to overcome potential objections.

⚠️ Legal Disclaimer

This article provides general information only and does not constitute legal advice. Evidence rules vary by jurisdiction, court, and case type. Always consult with a qualified attorney in your jurisdiction before collecting or presenting evidence in legal proceedings. They can advise you on:

Methods for Exporting iMessages for Legal Use

Method 1: Professional Desktop Software (Recommended)

Using dedicated software like ChatKeepsake provides the most comprehensive and court-friendly export format.

How to Export with ChatKeepsake:

  1. Download ChatKeepsake from chatkeepsake.com
  2. Grant Full Disk Access (required to read Messages database)
  3. Load your Messages database from your Mac or iPhone backup
  4. Select the conversation you need for legal purposes
  5. Export to PDF or CSV:
    • PDF: Professional, paginated format ideal for printing and court submission
    • CSV: Spreadsheet format for analysis, includes all metadata fields
  6. Include all messages - don't selectively delete (could be seen as tampering)
  7. Document the export: Note the date, time, and method used

Why this method is court-friendly:

Method 2: Screenshots (Not Recommended for Court)

While screenshots are quick and easy, they have significant limitations for legal purposes:

Problems with screenshots:

If you must use screenshots, follow these best practices:

Method 3: Forensic Examination (High-Stakes Cases)

For serious criminal cases, high-value civil litigation, or when evidence authenticity will be heavily challenged, consider hiring a certified digital forensic examiner.

When to use a forensic examiner:

What forensic examiners provide:

Cost: Typically $150-$500/hour. Total cost can range from $2,000-$20,000+ depending on complexity.

Best Practices for Preserving Text Message Evidence

1. Act Quickly

Export messages as soon as you know they may be needed:

2. Export Complete Conversations

Don't cherry-pick messages - this can undermine credibility:

3. Preserve Multiple Formats

Create redundant backups in different formats:

4. Document Your Process

Create a written record of your export process:

💡 Pro Tip: Create an Export Log

Write a simple text file documenting your export:

Date: November 18, 2025
Time: 2:30 PM EST
Performed by: [Your Name]
Source: MacBook Pro (Messages app)
Software: ChatKeepsake version 1.0 (Build 8)
Conversation: [Contact Name/Number]
Date Range: January 1, 2024 - November 18, 2025
Total Messages: 1,247
Format: PDF and CSV
Modifications: None - complete conversation exported
Storage: Saved to external hard drive, backed up to secure cloud storage

5. Store Securely

Protect your evidence from loss or tampering:

6. Maintain Originals

Keep the original source intact:

Working with Your Attorney

Before exporting messages for legal use, consult with your attorney about:

⚠️ Spoliation Warning

If you're involved in litigation or anticipate a lawsuit, you have a legal duty to preserve relevant evidence, including text messages. Destroying or failing to preserve evidence can result in:

When in doubt, preserve everything and let your attorney decide what's relevant.

Common Challenges and Solutions

Challenge: Deleted Messages

Solution: Act quickly if messages are deleted:

Challenge: Messages on Someone Else's Phone

Solution:

Challenge: Group Conversations

Solution:

Challenge: Attachments (Photos, Videos, Documents)

Solution:

Presenting Messages in Court

Once you've properly exported and preserved your messages, work with your attorney on presentation:

Format Options:

Authentication Process:

You'll typically need to testify or provide an affidavit stating:

Handling Objections:

Be prepared for opposing counsel to challenge:

Special Situations

Workplace Harassment or Discrimination

Divorce and Custody Cases

Criminal Cases

Export Your Messages Securely with ChatKeepsake

Create court-ready PDF and CSV exports with complete timestamps, metadata, and attachments preserved. 100% offline - your sensitive data never leaves your computer.

Download for Mac Download for Windows

Free version: up to 250 messages, CSV export
Pro upgrade: unlimited messages, PDF export, iPhone backup support ($9.99 one-time)

Frequently Asked Questions

Can screenshots be used as evidence in court?

Yes, but they're less reliable than proper exports. Courts may accept screenshots, but opposing counsel can challenge their authenticity more easily. Screenshots also don't preserve metadata and can be manipulated. If screenshots are your only option, follow the best practices outlined above and consider having them authenticated by an expert.

How long should I preserve messages for legal purposes?

If you're involved in active litigation, preserve messages until the case is completely resolved (including any appeals). If you anticipate litigation, preserve messages immediately and consult an attorney about retention requirements. For business records, follow your company's document retention policy and applicable regulations.

Can I delete messages after exporting them?

Generally, no - if you're involved in litigation, you must preserve the originals. Deleting messages after exporting could be considered spoliation of evidence. Always consult your attorney before deleting anything that might be relevant to your case.

What if the other person deletes their messages?

You can still use messages from your own device. If you need messages from their device, your attorney can request them through formal discovery or subpoena. If they've been deleted, a forensic examiner may be able to recover them. Intentional destruction of evidence can result in sanctions.

Do phone carriers keep copies of text messages?

Carriers typically keep metadata (who texted whom, when, and for how long) but not the actual content of messages. Retention periods vary by carrier (usually 3-7 years for metadata, little to no retention for content). iMessages are encrypted and Apple does not store content that could be produced via subpoena.

Are iMessages different from SMS for legal purposes?

From an evidence standpoint, both are treated similarly. However, iMessages are encrypted end-to-end and Apple cannot produce the content via subpoena. SMS messages go through carriers, but carriers rarely retain the actual content. The practical difference is minimal - you'll need to export from your own device or the device of the other party.

Can I export someone else's messages without their permission?

It depends on your jurisdiction and relationship. Generally:

What's the difference between PDF and CSV for legal purposes?

Recommendation: Export both formats. Provide PDF for court filings and CSV to your attorney for analysis.

Final Checklist: Exporting Messages for Legal Use

  1. ☐ Consult with an attorney before taking action
  2. ☐ Identify which conversations are relevant
  3. ☐ Export complete conversations (don't cherry-pick)
  4. ☐ Use reliable export software (ChatKeepsake recommended)
  5. ☐ Export to both PDF and CSV formats
  6. ☐ Document your export process (date, time, method)
  7. ☐ Preserve original messages (don't delete from device)
  8. ☐ Store exports in multiple secure locations
  9. ☐ Create redundant backups
  10. ☐ Provide exports to your attorney
  11. ☐ Follow your attorney's guidance on authentication
  12. ☐ Be prepared to testify about the messages' authenticity

Conclusion

Text messages can be powerful evidence in legal proceedings, but only when properly preserved and presented. By following the best practices outlined in this guide - exporting complete conversations, preserving metadata, maintaining chain of custody, and working closely with your attorney - you can ensure your messages will be admissible and persuasive in court.

Remember: every case is different, and evidence rules vary by jurisdiction. This guide provides general best practices, but you should always consult with a qualified attorney in your area before collecting or presenting evidence.

Act quickly to preserve important messages, document your process thoroughly, and store your evidence securely. When in doubt, preserve more rather than less - you can always decide later what's relevant with your attorney's guidance.

Related: Need to print your messages? See our complete walkthrough: How to Print iMessage Conversations.

About ChatKeepsake

ChatKeepsake is privacy-first macOS software for exporting Apple Messages to PDF and CSV formats. Built specifically for users who need reliable, professional exports - including legal professionals, HR departments, and individuals involved in litigation.

Learn more at chatkeepsake.com