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Sickle

Native macOS mail client that puts Gmail, Outlook, iCloud, Fastmail and IMAP accounts in one window, with an MCP server for agents.

From $2.50/moActively maintained

SalesAgents
sickle.app ↗
Open sickle.appAlternativesSet it up for my team
Sickle: data, price, alternatives
At a glancechecked Oct 27, 2026

not read yet

Use

For
Mac users with several email accounts who want an AI agent to work their inbox
Price
From $2.50/mopricing page, read Oct 27, 2026
Activity
Actively maintainedsite updated 8 days ago
Company
Better Email Ltd · Domain since 2023privacy policy · domain registered
How it runs
Desktop app
Used for
  • find threads waiting on your reply across accounts
  • archive newsletters through an AI agent
  • view all mailboxes side by side in one window
read off sickle.app on Oct 27, 2026
Worth knowingcomputed from what we read · each with its source
  • On the web since 2023, older than 76% of its shelfINITE Atlas
  • Has an MCP server (1 in the registry)public registry →
Pricingpricing page, read Oct 27, 2026

From $2.50/mo

pricing page

Price Watch: every price change in the Atlas, weekly

Your datawhat they publish, each line with its page · read Oct 27, 2026

“We don't sell your data, don't use it for advertising and don't use your email to train AI models.”

privacy policy ↗

These are Sickle's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 27, 2026
  • MCP serverapp.sickle/mailverified in the MCP registry
  • Stateanswers, requires sign-inchecked 2026-10-27
  • Address to connectmcp.sickle.app
  • MCP docssickle.app/mcpthe vendor's page ↗
  • Status pagelinked from the homepagestatus.sickle.app ↗

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Salesby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is Sickle?

    Native macOS mail client that puts Gmail, Outlook, iCloud, Fastmail and IMAP accounts in one window, with an MCP server for agents. It is listed in the Atlas under Sales and made by Better Email Ltd.

  • Who is Sickle for?

    Mac users with several email accounts who want an AI agent to work their inbox

  • How much does Sickle cost?

    Paid plans start at $2.50/mo, per Sickle's pricing page on 2026-10-27.

  • Is Sickle free?

    No. Its pricing page showed no free plan on 2026-10-27.

  • Do people use Sickle?

    Little sign of use.

  • Is Sickle still maintained?

    Actively maintained: site updated 8 days ago.

  • Who owns Sickle?

    Sickle is run by Better Email Ltd, per its privacy policy (2026-10-27).

  • Does Sickle train AI on your data?

    No, per its privacy policy (2026-10-27): “We don't sell your data, don't use it for advertising and don't use your email to train AI models.”

  • Is Sickle safe?

    We do not audit vendors. What Sickle publishes, read 2026-10-27: on training with your data, “We don't sell your data, don't use it for advertising and don't use your email to train AI models.”.

  • How do I cancel Sickle?

    In its own words (pricing page, 2026-10-27): “Billing is handled by Stripe, and you can manage or cancel the subscription at sickle.app or in the app.”

  • What are alternatives to Sickle?

    In Sales, by use: Canary Mail, Regie, Reply.io, RevOS, Mitosis Labs.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk