Sent-message records

Know what was sent, what was delivered, and what happened next.

SentLedger sends your messages, tracks delivery, opens, link clicks and file views, and keeps it all in a tamper-evident timeline you can export whenever you need to show your work.

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14-day trial · No card required · Works from the web app or your own software via API

Built forAuto body & collision·Law firms·Contractors·Property managers·Collections·Sales teams·Software platforms
One record per message

Everything you'd want to know about a message you sent.

Send it, track it, control it, and export the whole story — from one place.

Send from anywhere

Compose in the web app, send through your connected Gmail or Microsoft 365, or post to the API from your own software.

Track honestly

Opens, clicks and file views — each labeled with device type and flagged when a privacy proxy or scanner was involved.

Evidence timeline

Every event is hash-chained to the one before it. Change anything and verification fails.

Secure files & links

Share files through expiring, revocable links instead of attachments, and see when each one was opened.

Connected inboxes

Send as yourself from Gmail or Microsoft 365, with least-privilege, send-only permissions.

Developer API

Versioned REST API, scoped API keys, idempotent sends, signed webhooks and an OpenAPI spec.

Templates

Reusable templates with merge fields, folders, version history and team sharing.

Team controls

Workspaces, roles, invitations, audit logs and plan-level limits you can see.

Evidence ledger

A timeline you can hand to someone else.

Each message gets a durable ledger: content fingerprints, sender and recipients, provider IDs, every delivery and tracking event, and a plain-English explanation of what each event does and doesn't show.

  • SHA-256 hashes of the final HTML and text bodies, frozen at send time
  • Hash-chained events: remove or edit one and the chain breaks
  • Export a PDF report, JSON, CSV, or a zipped package with a signed manifest
  • Your own metadata — claim numbers, case IDs, invoice numbers — on every record
Web app + API

Use it yourself, or build it into your product.

Your team works in the SentLedger web app. Your software talks to the same system through the API. Either way, every message lands in the same ledger with the same event model.

  • Scoped API keys, shown once and stored only as hashes
  • Idempotency keys make retries safe
  • Signed webhooks for sent, delivered, opened, clicked, file viewed, bounced and more

Explore the API →

# Send a tracked message and get its ledger
curl https://sentledger.com/v1/messages \
  -H "Authorization: Bearer $SENTLEDGER_KEY" \
  -H "Idempotency-Key: claim-NG-448120-supp-2" \
  -d '{
    "to": ["dana.whitfield@northgate-ins.com"],
    "subject": "Supplement request — Claim #NG-448120",
    "html": "<p>Please review the attached supplement.</p>",
    "file_ids": ["f3b1…"],
    "metadata": { "claim_id": "NG-448120" },
    "send": true
  }'

GET /v1/messages/{id}/evidence?format=pdf
Use cases

For anyone who needs a record of what they sent.

Business operations

Invoices, notices, approvals and supplements with a timeline your office manager can pull up in seconds.

Legal & compliance

Organized, exportable records of notices and correspondence, with honest labels on what each event means.

Sales

Know when proposals and quotes are opened and which links got attention — without guessing.

Service businesses

Body shops, contractors and property managers: estimates, photos and documents through secure, trackable links.

Software platforms

Add sent-message evidence to your product through the API, with your own IDs on every record.

Collections & notices

Consistent, suppression-aware sending with unsubscribe handling and a durable history per contact.

See use cases in detail →

Messages

Find any message in seconds.

Search by recipient, subject, tag, source, date or your own metadata. Filter to what was opened, clicked, bounced — or never opened at all.

  • Dashboard with sends, delivery, opens, clicks and failures over time
  • Per-contact communication history
  • Resend, duplicate, archive, revoke — with permissions
FAQ

Straight answers about tracking.

Does an "opened" event prove someone read my email?

No. An open means a tracking image in the message was loaded. Many mail apps block images (so real opens go unrecorded), and privacy features like Apple Mail Privacy Protection or Gmail's image proxy can load images without the recipient opening anything. SentLedger flags proxy and automated loads as uncertain so you can weigh them properly.

What does SentLedger actually record?

The exact content you sent (with SHA-256 fingerprints), who it went to, the sending provider's acceptance and delivery reports, and tracked events: image loads, link clicks, and secure-file views. Every event is added to a tamper-evident, hash-chained ledger that you can export as PDF, JSON or CSV.

Is this legally admissible evidence?

SentLedger produces an organized, defensible record with transparent technical details — but it doesn't make anything automatically admissible. How records are used is up to you and your counsel.

Can I send from my own Gmail or Microsoft 365 account?

Yes. Connect your inbox with OAuth and SentLedger sends through it, so the message appears in your Sent folder. Opens, clicks and file views are tracked; delivery and bounce reports aren't available from those providers, and we say so on each record.

Do recipients know tracking is used?

You can require a tracking notice on every message, and SentLedger never hides tracking in deceptive ways. Recipients can unsubscribe where relevant, and we honor suppression lists automatically.

Can our software send through SentLedger?

Yes. The REST API lets your platform create and send messages, attach secure files, pass your own metadata (claim numbers, case IDs, invoice numbers), and receive signed webhooks as events happen.

Keep a record you can stand behind.

Start with the web app today and bring in the API when you're ready. No card required for the trial.

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