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Arch AI vs SaneBox

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. SaneBox publishes a starting price ($9.49); Arch AI does not. Only Arch AI has a free tier.

Arch AIAI email copilot that drafts replies, summarizes threads, and flags urgent messages in your writing style.SaneBoxServer-side email triage that sorts your inbox by importance

Side by side

FactArch AISaneBox
CategoryEmail ManagementEmail Management
Pricing modelFreemiumPaid
Starts at—$9.49 month
Public APINoNo
PlatformsWebWeb
CompanyArch IntelligenceSaneBox, Inc.
Launched2023—
Last verifiedSep 1, 2026Sep 6, 2026

What our research says

Arch AI

Arch's pitch, summarizing the inbox, drafting replies in the user's own voice, flagging what's actually urgent, targets the daily grind of email triage rather than a one-off writing task. Outlook is the mature integration; Gmail was still being finished as of the source used here, so Gmail-first users should confirm current status before relying on it.

Pros

  • Urgency detection flags time-sensitive emails instead of leaving triage entirely manual
  • Calendar cross-referencing factors real availability into suggested replies
  • States GDPR/CCPA-aligned handling and encryption for email data

Cons

  • Gmail integration was still in progress as of the source used for this record, limiting it mainly to Outlook users
  • No specific pricing figures published, only a general free-to-enterprise range
  • The product's own site was almost entirely inaccessible to direct research, so claims rely on secondary sources

SaneBox

The most durable answer to inbox overload precisely because it is client-agnostic: it changes your mail server, not your mail app, so it works the same in Outlook, Apple Mail and Gmail. Skip it if you live entirely in Gmail and will spend an afternoon building filters yourself.

Pros

  • Operates at the IMAP and Exchange layer, so there is no client lock-in or extension to install
  • 14-day trial with no card required
  • Blackhole and digest behaviour is genuinely hard to reproduce with manual filters
  • Biyearly billing cuts the effective Snack rate to about $4.54 a month

Cons

  • Snack tier caps you at one account and only two features, so most users land on Lunch or higher
  • Paid utility with no free tier at all
  • No public developer API and api.sanebox.com does not respond
  • Sorting only continues while the service retains mailbox access

Which one fits

Choose Arch AI if you need

  • Outlook users wanting AI-drafted replies and thread summaries
  • Teams using email for support or lead follow-up who want urgency flagged automatically
  • Anyone who wants replies matched to their own tone rather than a generic AI style

Choose SaneBox if you need

  • People juggling several mailboxes across different providers
  • Outlook, Fastmail and iCloud users that Gmail-only AI tools ignore
  • Anyone who wants triage to persist across phone, laptop and web with nothing installed

More comparisons

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