Features

Human/proxy/scanner classification of opens and clicks with confidence and explanations.

Open pixel and link redirector with 128-bit tokens and anti-enumeration.

Free tool: paste email headers, see the journey and whether a human opened it.

Accept payment inside a signed document; amount always server-side.

Proposals from content blocks with auto-sum pricing tables and immutable snapshots.

Manager/owner approval with segregation of duties and content-hash re-approval.

Signer ordering, OTP/passkey verification, certificate PDF and hash-chain audit.

Server-side suggested-action cards with 24h cooldown and deal health score.

Document field extraction with untrusted-document isolation and human-in-the-loop.

Draft-only follow-ups, never auto-send; output constraints and allowlisted links.

HubSpot/Pipedrive contact sync with dedup and activity notes.

Xero/QuickBooks invoice on payment, VAT from Stripe Tax, PAID writeback.

Calendly/Cal.com embed with email prefill and booking_clicked evidence.

Google/Microsoft calendar drafts in the recipient's timezone.

REST API with trax_ keys (Argon2id), scopes, RFC7807 errors, cursor pagination.

HMAC-SHA256 signed events with retry backoff and event_id idempotency.

DIRECT/QUEUE event bus for 1M-user async ingestion with batch inserts.