ProtonMail/gluon

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An IMAP server library written in Go

Stars: 553
Forks: 38
Open beginner issues: 0
Indexed issues: 14
Avg merge: 11h
Merged PRs (30d): 2

Dominant language: Go
License: MIT
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

14 open issues indexed

Pin release workflow actions to immutable commit SHAs Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

ProtonMail/gluon#493 · Opened Aug 24, 2026
Cannot parse a message sent to undisclosed recipients Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

ProtonMail/gluon#482 · 1 comment · Opened Aug 10, 2026
CREATE rejected with "invalid mailbox name" for hierarchy starting with "Mailspring" (breaks Mailspring email client through Proton Bridge) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

ProtonMail/gluon#471 · Opened May 21, 2026
Per-message flat-directory file storage does not scale (65K+ files) Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

ProtonMail/gluon#454 · Opened Feb 25, 2026
SQLite performance PRAGMAs not configured (auto_vacuum, cache_size) Open

Difficulty 3/5 1-2 days Newbie friendliness 50/100

ProtonMail/gluon#453 · Opened Feb 25, 2026
Orphaned databases and message stores not cleaned up after re-sync Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

ProtonMail/gluon#452 · Opened Feb 25, 2026
correct way to implement Connector interface Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ProtonMail/gluon#424 · 2 comments · Opened Mar 1, 2025
Update Gluon's semver to help packaging on musl-based systems Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

ProtonMail/gluon#410 · Opened May 27, 2024
Flaky tests Open

blocked

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ProtonMail/gluon#404 · 1 comment · Opened Jan 17, 2024
Attempt to merge ProtonMail/go-mbox with upstream emersion/go-mbox Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ProtonMail/gluon#403 · Opened Jan 2, 2024
RFC5322 validation prevents importing of previously-received emails Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ProtonMail/gluon#386 · 12 comments · Opened Aug 5, 2023
Support RFC 5256 Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

ProtonMail/gluon#378 · Opened Jul 5, 2023
Please publish ImapTest results Open

ProtonMail/gluon#302 · 1 comment · 1 assignee · Opened Feb 23, 2023
SCRAM-SHA-1(-PLUS) + SCRAM-SHA-256(-PLUS) + SCRAM-SHA-512(-PLUS) + SCRAM-SHA3-512(-PLUS) supports Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ProtonMail/gluon#69 · 1 reaction · Opened Aug 11, 2022

ProtonMail/gluon

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