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Proton Bridge vs Shortwave

A side-by-side editorial comparison of Proton Bridge and Shortwave — release velocity, themes, recent moves, and the top alternatives to consider.

Proton Bridge vs Shortwave: at a glance

FeatureProton BridgeShortwave
SectorCommsComms
Velocity score2.50.0
Sparks · 30d00
Top themesemail, imap, privacy, maintenanceai-email, agentic-workflows, mcp, automation
Last editorial update17h ago1mo ago
WebsiteVisit →Visit →

What is Proton Bridge?

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

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.

Read the full Proton Bridge trajectory →

What is Shortwave?

Shortwave keeps folding autonomy into the inbox, one AI action at a time.

Shortwave has moved decisively from an AI-assisted email client to an inbox that acts on the user's behalf. The assistant reads, drafts, organizes, and — via the Tasklet integration — triggers automated workflows across thousands of apps, with its work surfaced inside Shortwave rather than buried in Gmail. Every release since late 2024 has pushed more of the email workflow out of the user's hands and into the model's.

Read the full Shortwave trajectory →

Proton Bridge vs Shortwave: editorial side-by-side

P2.5

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

◆ 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.

S0.0

Shortwave keeps folding autonomy into the inbox, one AI action at a time.

◆ Current state

Shortwave has moved decisively from an AI-assisted email client to an inbox that acts on the user's behalf. The assistant reads, drafts, organizes, and — via the Tasklet integration — triggers automated workflows across thousands of apps, with its work surfaced inside Shortwave rather than buried in Gmail. Every release since late 2024 has pushed more of the email workflow out of the user's hands and into the model's.

◆ Where it's heading

The direction is a steadily widening action surface: MCP connectors to external tools, AI Memories, voice, and now trigger-based automation all frame email as an agent runtime rather than a reading pane. Model choices track the frontier closely — Claude 3.7 to Sonnet 4 to the 4.6 family — keeping capability tied to whatever the best available model can do. The team ships broadly across web, desktop, iOS, and Android each cycle.

◆ Prediction

The next moves most likely deepen autonomous execution — more trigger types and tighter loops where the assistant acts with less confirmation — rather than adding new surface features.

Alternatives to Proton Bridge and Shortwave

Other Comms products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Proton Bridge or Shortwave.

See all Proton Bridge alternatives → · See all Shortwave alternatives →

Recent activity from Proton Bridge and Shortwave

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1d agoProton BridgeBridge 3.26.0: macOS 27 crash fix and bounded RFC parser resources
  2. 2mo agoProton BridgeBridge 3.25.0: IMAP and sync fixes bundled with dependency updates
  3. 3mo agoProton BridgeBridge 3.24.2 patch with a single-line note
  4. 4mo agoProton BridgeBridge 3.24.1 patch with a single-line note
  5. 4mo agoProton BridgeBridge 3.24.0 Nescio feature cut
  6. 4mo agoProton BridgeBridge 3.23.1 patch on the Margit line
  7. 5mo agoShortwaveUpgraded to Claude Sonnet & Opus 4.6
  8. 7mo agoShortwaveFully automate your email with Tasklet 🔗
  9. 11mo agoShortwaveEnhanced AI performance & collaboration
  10. 1y agoShortwaveIntegrate the AI with all your apps 🔌
  11. 1y agoShortwaveTalk to your inbox 🎙️
  12. 1y agoShortwaveOrganize your inbox with AI ✨

Frequently asked questions

What is the difference between Proton Bridge and Shortwave?

They serve adjacent needs but don't currently overlap on shipped themes. Proton Bridge is currently shipping more aggressively (velocity 2.5 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Proton Bridge better than Shortwave?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Proton Bridge is currently shipping more aggressively (velocity 2.5 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Comms products to evaluate alongside.

What are the best alternatives to Proton Bridge?

Top Proton Bridge alternatives in Comms are ranked by recent ship velocity. Browse the "Proton Bridge alternatives" section above for the current picks, or visit /alternatives/proton-bridge for the full list with editorial commentary on each.

What are the best alternatives to Shortwave?

Top Shortwave alternatives in Comms are ranked by recent ship velocity. Browse the "Shortwave alternatives" section above for the current picks, or visit /alternatives/shortwave for the full list with editorial commentary on each.