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Proton Bridge

COMMS
Velocity2.5

Encrypted email bridge connecting Proton Mail to desktop email clients

proton.me/mail/bridge ↗

Proton Bridge spends its first release in ten weeks on crashes, memory bounds and dead code

emailimapprivacymaintenancemacos
◆Current state
v3.26.0 is a maintenance cut. The user-visible items are a macOS 27 crash fix, bounded CPU and memory in the Gluon RFC parser, deletion of orphaned unencrypted vaults once keychain access returns, and a meta+W shortcut. The rest is internal: two unused subsystems removed from go-proton-api, two Go toolchain bumps, gomock swapped for uber-go/mock, and June and July vulnerability patches folded in.
◆Where it's heading
Releases arrive in long gaps — ten weeks since v3.25.0 — and each one bundles a quarter of dependency hygiene with a handful of IMAP correctness fixes. The recurring theme is RFC 3501 conformance and resource bounds in the mail parser rather than new capability, which is what a local IMAP shim for an encrypted mailbox is supposed to look like.
◆Prediction
Given the pattern of shipping OS-compatibility fixes shortly after a macOS release, the next cut is likely another maintenance bundle timed to whatever the current macOS version breaks.

◆Recent moves

  1. 1d ago

    Bridge 3.26.0: macOS 27 crash fix and bounded RFC parser resources

    The first release since June, and it reads as a quarter of accumulated maintenance: a macOS 27 crash, unbounded CPU and memory in the Gluon RFC parser, orphaned vault cleanup, and two rounds of vulnerability patches. No new capability, which fits what this component is for.

    View source ↗
  2. 2mo ago

    Bridge 3.25.0: IMAP and sync fixes bundled with dependency updates

    The previous cut ten weeks earlier, following the same shape of IMAP correctness work bundled with dependency hygiene.

    View source ↗
  3. 3mo ago

    Bridge 3.24.2 patch with a single-line note

    A patch release with a one-line note, part of the run of small Nescio fixes.

    View source ↗
  4. 4mo ago

    Bridge 3.24.1 patch with a single-line note

    Another single-line Nescio patch with no detail in the feed.

    View source ↗
  5. 4mo ago

    Bridge 3.24.0 Nescio feature cut

    The Nescio feature cut, the last release before this window that carried substantive notes.

    View source ↗
  6. 4mo ago

    Bridge 3.23.1 patch on the Margit line

    A small patch on the Margit line, carried here only as cadence context.

    View source ↗