Preserving Evidence in Delaware Court of Chancery Litigation: A Practical Guide

In Delaware Court of Chancery litigation, evidence is often more important than legal argument.

Many disputes ultimately turn on a small number of documents:

• an email sent at the wrong time;

• a board consent that was never executed;

• a text message between directors;

• a cap table version;

• a Slack conversation;

• a valuation spreadsheet;

• a draft operating agreement.

For this reason, Delaware courts treat the preservation of evidence as a fundamental obligation of every litigant.

Destroying evidence intentionally is obviously problematic.

Less obvious is that failing to preserve evidence through carelessness, poor organization or inadequate systems can create similar consequences.

The Delaware Court of Chancery has repeatedly imposed sanctions on parties that failed to preserve emails, text messages and other electronically stored information ("ESI"), even where the destruction was reckless rather than intentional.

For self-represented litigants, understanding evidence preservation is therefore one of the most important procedural obligations in the entire litigation process.

When Does the Duty to Preserve Evidence Begin?

One of the most common misconceptions is that preservation obligations begin only after a lawsuit is filed.

They do not.

Under Delaware law, the duty to preserve evidence generally arises when litigation becomes reasonably anticipated.

Examples include:

• receiving a demand letter;

• receiving a threat of litigation;

• sending a demand letter yourself;

• discussions among founders about potential litigation;

• termination of a founder under disputed circumstances;

• a disputed financing round;

• shareholder demands for records;

• allegations of fiduciary misconduct;

• disputes over ownership interests.

A useful practical test is:

Would a reasonable person believe there is a meaningful possibility that this dispute could end up in court?

If the answer is yes, preservation should begin immediately.

Waiting until a complaint is filed is often too late.

What Must Be Preserved?

The answer is broader than many litigants expect.

The obligation covers potentially relevant information within your possession, custody or control.

This includes both paper records and electronically stored information.

Typical categories include:

Communications

• emails;

• text messages;

• WhatsApp messages;

• Signal messages;

• Slack conversations;

• Microsoft Teams chats;

• Telegram messages;

• LinkedIn messages;

• Discord communications.

Recent Delaware cases have focused heavily on mobile messaging applications and missing text messages.

Corporate Records

• board minutes;

• written consents;

• resolutions;

• stock ledgers;

• cap tables;

• shareholder registers;

• financing documents;

• investor updates;

• governance records.

Agreements and Drafts

• operating agreements;

• shareholder agreements;

• purchase agreements;

• SAFE agreements;

• side letters;

• employment agreements;

• draft versions of agreements.

Drafts are often discoverable and may become important evidence regarding negotiations or intent.

Financial Records

• accounting records;

• invoices;

• bank statements;

• budgets;

• forecasts;

• valuation models;

• payment records.

Files Stored in Cloud Systems

Many litigants overlook cloud storage.

Potential evidence frequently resides in:

• Google Drive;

• Dropbox;

• OneDrive;

• Box;

• Notion;

• Airtable;

• Confluence;

• GitHub repositories.

Deleting cloud files after litigation becomes foreseeable creates the same preservation issues as deleting local files.

Metadata

Metadata can be as important as the document itself.

Examples include:

• creation dates;

• modification dates;

• authorship information;

• revision history;

• access logs.

Exporting documents into PDFs may sometimes destroy metadata that later becomes relevant.

What Is Spoliation?

The destruction, alteration or loss of evidence is referred to as spoliation.

Spoliation may involve:

• deleting emails;

• factory resetting phones;

• wiping laptops;

• deleting Slack workspaces;

• overwriting backups;

• changing document timestamps;

• deleting text messages;

• allowing auto-deletion settings to continue operating.

Importantly, courts distinguish between unavoidable loss and failures to take reasonable preservation steps.

The question is often not whether information was lost, but whether reasonable preservation efforts were made.

Delaware Courts Take Messaging Applications Seriously

Historically, litigants focused preservation efforts on email.

Modern Delaware litigation increasingly focuses on text messages and messaging applications.

Recent Court of Chancery decisions imposed sanctions where parties failed to preserve text messages despite being aware of potential litigation. In several cases, the Court concluded that preservation efforts began too late or were not implemented effectively.

If important business discussions occurred through:

• iMessage;

• WhatsApp;

• Signal;

• Telegram;

• Slack;

those communications should generally be preserved.

The fact that a communication occurred on a personal device does not necessarily make it immune from discovery.

Immediate Preservation Steps

Once litigation becomes reasonably foreseeable, consider taking the following actions immediately.

Disable Automatic Deletion

Many systems automatically delete information.

Examples include:

• disappearing messages;

• automatic email deletion rules;

• Slack retention limits;

• mobile message expiration settings;

• cloud retention policies.

Automatic deletion mechanisms should generally be suspended for relevant information sources.

Preserve Mobile Devices

Do not:

• replace phones;

• wipe devices;

• perform factory resets;

• delete conversations.

Mobile devices increasingly contain some of the most important evidence in corporate disputes.

Preserve Accounts Rather Than Exporting Select Documents

Many litigants make the mistake of exporting only the documents they believe matter.

The better approach is usually to preserve the entire repository:

• mailbox;

• Slack workspace;

• cloud folder;

• messaging account.

You rarely know at the beginning of litigation which documents will eventually matter.

Identify Custodians

A custodian is a person likely to possess relevant information.

Examples include:

• founders;

• directors;

• investors;

• finance personnel;

• employees involved in disputed events.

Creating a custodian list early helps avoid overlooking important evidence sources.

Create a Preservation Inventory

Maintain a list of:

• devices;

• accounts;

• repositories;

• cloud services;

• custodians.

Professional litigation teams often create preservation matrices for exactly this purpose.

Litigation Holds

A litigation hold is a formal instruction to preserve potentially relevant information.

Large organizations often issue written litigation hold notices to employees and directors.

Typical litigation holds identify:

• the nature of the dispute;

• categories of information to preserve;

• relevant date ranges;

• affected custodians;

• prohibited deletion activities.

The existence of a litigation hold alone is not sufficient.

Delaware courts increasingly examine whether the hold was actually implemented and monitored.

Rule 37 and Sanctions

Court of Chancery Rule 37 governs sanctions relating to discovery failures and lost electronically stored information.

Before sanctions are imposed for lost electronic evidence, courts generally examine:

1. Whether a duty to preserve existed.

2. Whether the evidence was lost.

3. Whether reasonable preservation efforts were taken.

4. Whether the opposing party suffered prejudice.

Potential Consequences of Failing to Preserve Evidence

Possible sanctions include:

• monetary sanctions;

• fee shifting;

• additional discovery obligations;

• exclusion of evidence;

• limitations on defenses;

• adverse evidentiary inferences.

An adverse inference is particularly significant.

The Court may instruct itself — or infer in its own analysis — that the missing evidence would likely have been unfavorable to the party responsible for its loss.

In extreme situations, courts may impose even more severe remedies.

Preservation Is Primarily an Organizational Problem

Most preservation failures are not malicious.

They occur because litigants lose track of:

• devices;

• accounts;

• custodians;

• backups;

• retention settings.

Large law firms devote significant resources to litigation support because preservation has become an operational challenge rather than merely a legal one.

A modern business dispute may involve:

• four founders;

• six years of email;

• multiple Slack workspaces;

• personal phones;

• cloud storage systems;

• investor portals;

• accounting systems;

• project management tools.

Without a structured process, information loss becomes almost inevitable.

Using Technology to Support Preservation

Modern litigation increasingly relies on technology to maintain defensible preservation processes.

Useful capabilities include:

• document indexing;

• custodian tracking;

• chronology construction;

• repository inventories;

• evidence tagging;

• chain-of-custody records;

• full-text search.

Litigation management platforms such as AITARA Pilot can assist litigants in organizing documents, preserving timelines and maintaining traceability between evidence and factual assertions.

Technology does not satisfy preservation obligations by itself.

It can, however, significantly reduce the risk that relevant evidence becomes fragmented across devices, repositories and communication platforms.

Final Thoughts

The Delaware Court of Chancery expects litigants to preserve relevant evidence once litigation becomes reasonably foreseeable.

The obligation applies to emails, text messages, cloud systems, mobile devices and virtually every modern form of business communication.

The safest assumption is simple:

If a document, message or file may later become relevant to the dispute, preserve it.

In Delaware litigation, parties rarely regret preserving too much information.

They frequently regret preserving too little.