Issues

• ENVELOPE sends raw UTF-8 in quoted strings to clients that have not enabled UTF8=ACCEPT

  ProtonMail/gluon#498 · Filter by author jabberwock opened on Oct 6, 2026

• Pin release workflow actions to immutable commit SHAs

  ProtonMail/gluon#493 · Filter by author m-zandi opened on Aug 24, 2026

• Cannot parse a message sent to undisclosed recipients

  ProtonMail/gluon#482 · Filter by author petrmanek opened on Aug 10, 2026
  2

• CREATE rejected with "invalid mailbox name" for hierarchy starting with "Mailspring" (breaks Mailspring email client through Proton Bridge)

  ProtonMail/gluon#471 · Filter by author visorcraft opened on May 21, 2026

• Per-message flat-directory file storage does not scale (65K+ files)

  ProtonMail/gluon#454 · Filter by author clemlesne opened on Feb 25, 2026

• SQLite performance PRAGMAs not configured (auto_vacuum, cache_size)

  ProtonMail/gluon#453 · Filter by author clemlesne opened on Feb 25, 2026

• Orphaned databases and message stores not cleaned up after re-sync

  ProtonMail/gluon#452 · Filter by author clemlesne opened on Feb 25, 2026

• correct way to implement Connector interface

  ProtonMail/gluon#424 · Filter by author CognoscereK opened on Mar 1, 2025
  2

• Update Gluon's semver to help packaging on musl-based systems

  ProtonMail/gluon#410 · Filter by author CuriouslyCurious opened on May 27, 2024

• Flaky tests

  blocked
  ProtonMail/gluon#404 · Filter by author upils opened on Jan 17, 2024
  1

• Attempt to merge ProtonMail/go-mbox with upstream emersion/go-mbox

  ProtonMail/gluon#403 · Filter by author Maytha8 opened on Jan 2, 2024

• RFC5322 validation prevents importing of previously-received emails

  bug
  ProtonMail/gluon#386 · Filter by author alexforencich opened on Aug 5, 2023
  12

• Support RFC 5256

  enhancement
  ProtonMail/gluon#378 · Filter by author tristan957 opened on Jul 5, 2023

• Please publish ImapTest results

  ProtonMail/gluon#302 · Filter by author samkho opened on Feb 23, 2023
  1

  

• SCRAM-SHA-1(-PLUS) + SCRAM-SHA-256(-PLUS) + SCRAM-SHA-512(-PLUS) + SCRAM-SHA3-512(-PLUS) supports

  ProtonMail/gluon#69 · Filter by author Neustradamus opened on Aug 11, 2022