ThunderCrab interim-2026-07-13

Full Changelog: interim-2026-06-30...interim-2026-07-13

ThunderCrab build 6 — compose + send + signatures

ThunderCrab — build 6 (compose + send + signatures)

You can now WRITE and send mail, not just read it.

• Compose — the ✎ button on the inbox opens a composer (To / Cc / Subject /
  Message). Send re-prompts for your mail password each time (used once, never
  stored).
• Signature — set one under Settings → Outgoing mail; it's pre-filled into
  new messages.

Plus everything from builds 2–5: Thunderbird-style UI, message-load fix,
post-quantum TLS, folder management, appearance settings, visual rule editor,
on-device diagnostics. Universal APK (4 ABIs), debug-signed.

ThunderCrab build 8 — remote diagnostics

Android debug build. New: remote diagnostics — Settings → Privacy & diagnostics has a Verbose logging toggle (Rust engine logs to logcat) and a Send diagnostic report button that saves a report into a ThunderCrab-Diagnostics folder in your OWN mailbox (nothing goes to any third party). Adds UI breadcrumbs so a report shows what each screen actually displayed. Motivated by the no-mail-found report. Prior: search, attachments, IDLE push, safe HTML mail, personalization sync. Debug-signed, unverified per AVP-2.

ThunderCrab build 7 — search + attachments

Android debug build. New since build 6: mailbox full-text search (read-only IMAP SEARCH); attachments (list + Save via system file picker, no storage permission); CRLF/IMAP-injection guard on search terms. Earlier: IDLE push notifications, safe HTML mail, opt-in read receipts, IMAP METADATA personalization sync. Debug-signed, unverified per AVP-2. Track/update via Obtainium (this repo).