Changelog

Pre-launch. Entries describe behaviour as built; dates are omitted until there is a public release.

Accounts, billing and site#

Email and password accounts with verification before sending, session cookies for the dashboard, API keys for code.
Plans (Free, Pro, Scale) with enforced limits (402 plan_limit_exceeded) and billing through Stripe or Razorpay.
This website and documentation.

Custom domains with DNS records, zone files and verification; wildcard subdomains.
Agent sign-up with a human verification step; sending stays locked until verified.
Usage metrics (/v0/metrics/usage) at organization, pod and inbox level.
Rate metrics (/v0/metrics/rates): rolling bounce, complaint and open rates at organization, pod and inbox level.
Open tracking (track_opens): a signed pixel, the opened label and the message.opened event. See open tracking.
Ranked full-text search for messages and threads.
Paused inbox semantics: sends return 403 inbox_paused, inbound mail is dropped silently, scheduled drafts that fall due fail.
app_connect and app_share_owner permissions replace the old provider_* names.
Attachment downloads are served as attachments with nosniff and a sandbox CSP.
Idempotency keys for send, reply, forward and draft send.
Bounce and complaint suppression, with 422 recipient_suppressed.

IMAP and SMTP client access, tax invoicing, SDK and MCP coverage of domains and usage metrics.