Workflow · 10 min read
Text Message Summary Charts and Rule 1006
When long message records need summaries, charts, timelines, and underlying source access instead of a selective highlight reel.
The short answer
Federal Rule of Evidence 1006 allows a chart, summary, or calculation to stand in for voluminous material that cannot conveniently be examined in court — but on conditions. The underlying records have to be admissible themselves, and they must be made available to the other parties for examination. A summary is a presentation of evidence, not a substitute for having it. In practice that shapes how a chart should be built. Every figure should trace back to identifiable messages, so a challenge to one number is answerable by pointing at the rows behind it rather than by re-running the analysis. State what was counted and what was excluded, since a count is only meaningful alongside its criteria. Keep the source available in a form the other side can actually inspect. A chart that cannot be taken apart is one that invites the objection that it was assembled to persuade rather than to summarise. Textimony supports this workflow with a run-bound timeline, review candidates, context views, and reports rather than a detached summary with no way to inspect the supplied messages.
Why summaries need source access
Federal Rule of Evidence 1006 allows a court to admit a summary, chart, or calculation offered to prove the content of voluminous admissible writings, recordings, or photographs that cannot be conveniently examined in court. The proponent must make the originals or duplicates available for examination or copying at a reasonable time and place. A summary that cannot be traced back to source messages is just an assertion. A summary with citations, timestamps, and a manifest is easier to review and challenge.
What to include in a message chart
Date range and conversation scope. Participant map and any unresolved identity questions. Issue labels or event labels used in the chart. Message IDs, timestamps, and source-file references for each cited line. A note separating raw message content from interpretation. A redaction log if the chart is a privacy-safe review copy.
Textimony source traceability
Textimony organizes and summarizes records for review while keeping the underlying conversation inspectable. The product makes source context easier to inspect.
Summary charts need inspectable source material
A summary chart is useful only when the underlying message record remains identifiable and available for review. Long conversations can be too large to read line by line in a first pass, but the chart should never become a substitute for preserving the actual messages. For a Rule 1006-style workflow, the operational standard is traceability. Each chart row should connect to a source file, date range, participant map, message IDs, filters, and context window. If rows are selected by issue labels, the label rules should be visible too.
Chart fields to preserve
Source file, source hash when available, platform, conversation, and date range. Participant map version and sender identity confidence for each summarized event. Message IDs, timestamps, nearby context window, and attachment or media references. Selection rule for why a row appears: threat, admission, refusal, contradiction, exchange event, or other lane. Filters applied, excluded date ranges, redaction status, and unsupported file source notes. Reviewer note separating observed message content from interpretation or legal argument. Export date, report version, and link back to the evidence manifest.
What Textimony charts actually show
Textimony’s current charts show run-bound daily message aggregates by participant direction in the case’s frozen IANA timezone. A chart point is a count, not a finding or message citation, and it does not open an evidence record. Use the hover or keyboard tooltip and the accompanying table to inspect exact daily counts, then use the timeline, search, or candidate context to review messages. If a matter needs a Rule 1006 summary with row-level citations, prepare that separately from the aggregate activity chart.
Can a summary chart replace the full text message export?
No, and Rule 1006 does not contemplate that it would. A summary is admissible as a convenience for voluminous material precisely on the condition that the underlying records stay preserved, identifiable, and available to the other side. If the messages behind the chart cannot be produced, the chart generally cannot stand in for them — it is a way to present the record, not a replacement for it.
What should each chart row cite?
Enough for someone to find the underlying messages and check the row themselves. In practice that means the source file, the message identifiers or row numbers it draws on, the timestamp, the participants, and enough surrounding context to see whether the summary is fair. A row that characterizes a set of messages without pointing at them is an assertion, and it will be treated as one.
Does Rule 1006 automatically apply to text messages?
No. The proponent has to satisfy the rule’s conditions each time: the underlying material must be voluminous enough that it cannot conveniently be examined in court, it must itself be admissible, and the originals or duplicates must be made available to the other party. A few hundred messages will not usually qualify. Counsel should assess the particular summary and the forum, since state equivalents vary.
How do redactions affect summary charts?
The chart should say so on its face when it is built from a redacted copy, and the unredacted original must remain preserved. Redaction affects what a reviewer can verify, so presenting a summary as though it derived from the complete record when it did not is the kind of discrepancy that undermines the whole exhibit. Note which categories were redacted and why.
Published by
Textimony. Editorial status: Source-linked informational guide. Updated: 2026-07-14.
Sources
Federal Rule of Evidence 1006; Federal Rule of Evidence 901; ABA: Summaries Must Meet Rules 611(a), 1006