In a court case, correspondence means the written communications that pass among the parties, their attorneys, and the court itself. That covers formal filings like complaints and motions, discovery requests and the responses to them, letters and emails between opposing counsel, and anything sent to a judge or court clerk. So the short answer to what correspondence means in court is broad: if it is written, connected to the case, and shared with another participant, it is correspondence, and rules govern how it must be sent, kept, protected, and used.
Those rules are stricter than most people expect. Mishandling even a routine letter can cost you a privilege, get evidence excluded, or draw sanctions.
The Main Types of Written Exchanges
Court correspondence falls into a few recognizable categories.
Pleadings frame the lawsuit. The complaint starts the case; the answer responds to it. Together they set out what each side claims and denies. Motions ask the court to do something specific, like dismiss a claim or compel the other side to turn over documents. Briefs carry the legal argument supporting or opposing a motion or an appeal.
Discovery documents make up the bulk of correspondence in most cases. These include written questions sent from one party to another, requests to produce documents or electronically stored information, and notices scheduling depositions. Federal Rule of Civil Procedure 26 sets the framework for these exchanges in federal court.1Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery
Less formal writing counts too. Letters between attorneys about scheduling, settlement, or discovery disputes become part of the record. Emails confirming a deadline or an agreement can later be used to show a party knew about an obligation. A simple letter demanding that the other side preserve documents can itself trigger significant legal duties.
Filing and Serving Court Correspondence
Every document filed after the initial complaint must be served on all other parties. Federal Rule of Civil Procedure 5 requires service of all pleadings filed after the complaint, written motions, discovery papers, and notices.2Legal Information Institute. Federal Rules of Civil Procedure Rule 5 – Serving and Filing Pleadings and Other Papers No participant should learn about a filing by accident.
Most federal courts, and many state courts, now require electronic filing. E-filing systems notify the other parties automatically, so a separate certificate of service isn’t needed. Documents served another way need a certificate confirming when and how they were delivered.2Legal Information Institute. Federal Rules of Civil Procedure Rule 5 – Serving and Filing Pleadings and Other Papers E-filing systems also enforce strict formatting. A document with the wrong margins, font size, or file type can be rejected outright.
Deadlines run the whole process. Courts enter scheduling orders early in the case that cap the time to amend pleadings, finish discovery, and file motions.3Legal Information Institute. Federal Rules of Civil Procedure Rule 16 – Pretrial Conferences; Scheduling; Management Miss one and you can lose the right to raise a claim, present a defense, or introduce evidence. Attorneys track these dates through docketing software. If you’re representing yourself, the tracking is on you.
When a Letter or Email Can Be Used as Evidence
Correspondence doesn’t admit itself into evidence. Two hurdles stand between the writing and the jury.
Authentication
The party offering a document must show it is what they say it is. Federal Rule of Evidence 901 requires enough proof “to support a finding that the item is what the proponent claims it is.”4Legal Information Institute. Federal Rules of Evidence Rule 901 – Authenticating or Identifying Evidence For a physical letter, that often means testimony from the person who wrote or received it. For emails and texts, authentication tends to rely on distinctive characteristics: the sender’s address, writing style, or references to things only the sender would know.
Electronic correspondence is harder. Screenshots can be altered, metadata stripped, accounts hacked. Courts look at the totality of the circumstances: does the content fit what the alleged sender would know, do other messages in the thread corroborate authorship, did the recipient’s system log the communication. No single factor decides it.
Hearsay
Even an authenticated document may be excluded as hearsay. A statement is hearsay when it was made outside the current trial and is offered to prove that what it says is true.5Legal Information Institute. Federal Rules of Evidence Rule 801 – Definitions That Apply to This Article; Exclusions from Hearsay A letter from a contractor saying “the roof was installed correctly” is hearsay if you’re offering it to prove the roof was installed correctly.
Exceptions save a lot of correspondence. Business records kept as a regular practice qualify if they were created near the time of the event by someone with knowledge.6Legal Information Institute. Federal Rules of Evidence Rule 803 – Exceptions to the Rule Against Hearsay Public records from government offices also qualify. Statements by an opposing party are excluded from the definition of hearsay altogether, which is why a damaging email written by the other side is almost always admissible against them.
Settlement Letters Are Generally Off-Limits
One category of correspondence gets special protection. Federal Rule of Evidence 408 bars the use of settlement offers, counteroffers, or statements made during settlement negotiations to prove that a claim is valid or invalid.7Legal Information Institute. Federal Rules of Evidence Rule 408 – Compromise Offers and Negotiations The reason is practical: if settlement talk could be used at trial, no one would negotiate.
The protection has edges. Settlement correspondence may sometimes come in for other purposes, like showing bias or negating a claim of undue delay. But the core rule holds. A $50,000 offer cannot be waved at a jury as proof the offering party thought the case was weak.
Correspondence That the Other Side Can’t See
Not all written material in a case is discoverable. Two overlapping protections shield certain communications from disclosure.
Attorney-Client Privilege
For a communication to be privileged, it must be made to or from an attorney, intended to stay confidential, and created for the purpose of giving or receiving legal advice. Copying a lawyer on a routine business email does not make it privileged. The privilege protects the content, not the fact that a consultation happened or the general subject discussed.
Privilege is fragile. Sharing a privileged email with someone outside the attorney-client relationship can destroy it. If a privileged document slips into a discovery production, Federal Rule of Evidence 502 provides a safety net: inadvertent disclosure does not waive the privilege as long as the holder took reasonable steps to prevent the error and acted promptly to fix it.8Legal Information Institute. Federal Rules of Evidence Rule 502 – Attorney-Client Privilege and Work Product; Limitations on Waiver Courts often enter protective orders at the start of a case to address inadvertent disclosures.
Work Product
The work-product doctrine covers documents prepared in anticipation of litigation. That reaches beyond lawyer-client communications to research memos, strategy notes, draft briefs, and similar materials, even when prepared by non-attorneys at the direction of counsel. Protection is strongest for materials that reflect an attorney’s mental impressions and legal theories.
Work-product protection, unlike attorney-client privilege, can be overcome. A court may order disclosure if the opposing party shows substantial need and no equivalent way to get the information.1Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery Even then, courts are far more reluctant to turn over opinion work product than factual material like witness interview summaries.
Writing to the Judge: The Ex Parte Rule
One of the most important rules about court correspondence is also one of the most absolute. You generally cannot communicate with a judge about the substance of a case unless the other side is included. These one-sided contacts are called ex parte communications, and both ethical rules and judicial conduct standards forbid them.
The Code of Conduct for United States Judges says a judge “should not initiate, permit, or consider ex parte communications” about a pending matter made outside the presence of the parties or their lawyers.9United States Courts. Code of Conduct for United States Judges A judge who receives one must notify the other parties and let them respond. Narrow exceptions exist for scheduling, administrative issues, and emergencies, but only if nothing substantive is discussed and no party gains an advantage.
The rule works the same way for attorneys, who are barred from communicating with judges, jurors, or other court officials outside the proceeding unless the law or a court order allows it.10American Bar Association. Model Rules of Professional Conduct Rule 3.5 – Impartiality and Decorum of the Tribunal A self-represented party is held to the same principle. Sending a letter directly to the judge without copying the other side is a serious procedural violation and can draw sanctions in extreme cases.
Your Duty to Preserve Correspondence
Once you reasonably anticipate litigation, you have a legal duty to preserve relevant documents and electronically stored information. This duty can kick in well before any lawsuit is filed. A demand letter, a government investigation, or an internal complaint that could grow into a claim can be enough to trigger it.
Preservation means suspending any routine document-destruction practices and making sure relevant emails, texts, voicemails, and paper files stay intact. In a business, this usually requires issuing a litigation hold notice to employees who may have relevant information.
The consequences of failing to preserve are serious. Under Federal Rule of Civil Procedure 37(e), if electronically stored information that should have been preserved is lost because a party didn’t take reasonable steps to keep it, the court may order measures to cure the resulting prejudice. If the court finds the destruction was intentional, it can instruct the jury to presume the lost material was unfavorable, or even dismiss the case or enter default judgment.11Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions “We didn’t know we had to keep those emails” rarely works as a defense.
Beyond preservation, parties have affirmative duties to produce correspondence during discovery. When a party ignores a discovery request or disobeys an order to produce, courts have broad power to respond. Sanctions range from paying the other side’s attorney fees, to treating disputed facts as established, to barring certain evidence, to striking pleadings and dismissing the case.11Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions A party that fails to disclose required information generally can’t use that information later unless the failure was harmless or substantially justified.
Correspondence Changes on Appeal
Written communication matters even more in appellate proceedings, where courts almost never hear live testimony. The appeal is decided on the trial court record and the parties’ briefs.
The process begins with a notice of appeal. In federal civil cases, it must be filed within 30 days after entry of the judgment or order being challenged.12Legal Information Institute. Federal Rules of Appellate Procedure Rule 4 – Appeal as of Right; When Taken Missing that deadline almost always ends the appeal. As a general rule, only final judgments resolving all claims and parties can be appealed; interlocutory orders are reviewable only in limited circumstances, like orders granting or denying injunctions, or when the trial judge certifies that an immediate appeal could significantly advance the resolution of the case.13Office of the Law Revision Counsel. 28 U.S. Code 1292 – Interlocutory Decisions
The appellant’s brief is the main vehicle for persuasion. Federal Rule of Appellate Procedure 28 requires a jurisdictional statement, a statement of the issues, a statement of the case with references to the record, a summary of the argument, and the argument itself with legal authority and the applicable standard of review.14Legal Information Institute. Federal Rules of Appellate Procedure Rule 28 – Briefs The appellee files a response. Alongside the briefs, the appellant prepares an appendix containing the key record materials the court needs to see.15Fourth Circuit Court of Appeals. Federal Rules of Appellate Procedure Rule 30 – Appendix to the Briefs Appellate courts are less forgiving than trial courts about procedural missteps, and a rejected filing can mean a forfeited argument.