The calendar that reads
its own mail.

I · The problem

An invite is just an email. Most clients forget that.

The meeting was never the hard part. The identity was.

II · What it does today

Seven things your inbox now does with an invite.

No new app to open, no second account to create. Each capability below is live the moment an invite reaches your inbox.

• ·
  Invites become event cards. A parsed panel in the reading pane — title, time, organiser, attendees, location — instead of an .ics file you download and open somewhere else.
• ·
  RSVP as the right identity. Accept, tentative, or decline. The reply goes out as a standards-compliant iCalendar METHOD:REPLY from the exact address the invite was sent to — never the wrong brand.
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  Propose a new time. Counter with a different slot and a short note. The organiser's Gmail, Outlook, or Apple Mail receives a real METHOD:COUNTER they accept in one click.
• ·
  A conflict warning before you commit. Accept an invite that overlaps something you already said yes to and Folio names the collision first — not at 2:01 pm.
• ·
  Recurring events expand. The weekly stand-up appears every week, not as a single row. RRULE series are materialised into individual occurrences, and EXDATE skips are honoured so a cancelled week doesn't show.
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  Bring an existing calendar in. Import one or more .ics exports from Google, Apple, Fastmail, or Proton, with an honest count of what was created, updated, and skipped.
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  Your agenda, as a feed. Folio publishes your whole agenda as a private, revocable iCal subscription URL — read it live in Apple Calendar, Fantastical, or Outlook.
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  External calendars can flow in. Paste a Google, Apple, Outlook, or other .ics subscription URL and Folio refreshes it into the agenda on a schedule.
• ·
  You can organise the meeting. Create a new invite from a bound identity; Folio writes it to your agenda and sends standards-shaped calendar mail from the right address.
• ·
  Booking links and reminders are included. Each identity can expose a public booking link, and reminder preferences cover in-app, push, and email-digest channels with a per-user offset.

III · The part only we do

RSVP as the right business. Without choosing.

Not a screenshot — a render in the same editorial design system the app uses. The stripe is the domain the invite was sent to.

IV · Side by side

Where this calendar sits.

Honest both ways. Folio leads on one row, trails on two, and ties on the rest. If you only ever answer other people's invites, the rows it trails on may never matter to you.

V · Where the line is

What it isn't.

A page that only lists strengths isn't worth trusting. Here is the boundary — some of it not built yet, some of it deliberate.

• —
  Shared team calendars are not the product.Folio is a single-operator product by design. It keeps one person's domains and identities straight; it is not a team scheduling suite.
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  Resource rooms and delegation stay elsewhere.Google Workspace and Microsoft 365 are still better if you need rooms, assistants managing another person's calendar, or organisation-wide availability policy.
• —
  Deep calendar administration is intentionally absent.There is no fleet of team calendars, conference-room inventory, or admin console for enforcing calendar defaults across employees.
• —
  Calendar is included, not separately packaged.There is no second calendar app, second account, or second subscription to install. The calendar lives inside the same Folio account and Android app.

None of this blocks the job this page describes. If meeting invites mostly arrive in your inbox rather than originate from you, Folio already handles them, end to end.

Common questions

Questions readers ask.

Is Folio a replacement for Google Calendar?

For a single operator, it can cover the daily calendar loop: RSVP, counter-propose, conflict warnings, recurring expansion, .ics import, external subscriptions, a private agenda feed, composed invites, booking links, and reminders. It is not a full Google Calendar replacement for teams because it has no shared team calendars, resource rooms, delegation, or organisation-wide calendar admin.

Which identity does an RSVP get sent from?

The address the invite was sent to. An invite addressed to hello@studio.com is answered as hello@studio.com — automatically, with no menu to pick from. That is the part a calendar tied to one account identity cannot do for someone running several domains.

Can I see all my meetings in one place?

Yes. The agenda groups every event by day and can be filtered by domain identity. You can import existing calendars from a .ics export, subscribe to external .ics URLs, and generate a private, revocable iCal feed URL to read the same agenda in Apple Calendar, Fantastical, or Outlook.

Does proposing a new time work with Gmail and Outlook?

Yes. A counter-proposal is sent as a standards-compliant iCalendar METHOD:COUNTER, which Gmail, Outlook, and Apple Mail present to the organiser as a real counter they can accept in one click — not a sentence buried in a reply.

What happens to recurring meetings?

They expand. Folio materialises the RRULE so a weekly stand-up appears as every individual occurrence rather than a single row, and EXDATE exceptions are skipped so a cancelled week does not show.

Do I need to install a separate calendar app?

No. The calendar is part of the web app at wm.emcognito.com and the Android app — the same account, the same inbox. There is no separate calendar app, account, or subscription to set up.

Sources & further reading

Where the claims come from.

• RFC 5545 — Internet Calendaring and Scheduling Core Object Specification (iCalendar)The VEVENT, RRULE, and EXDATE definitions behind invite parsing and recurring-event expansion.
• RFC 5546 — iCalendar Transport-Independent Interoperability Protocol (iTIP)The REQUEST / REPLY / COUNTER scheduling methods behind RSVP and propose-a-new-time.

Where this calendar fits

Read on.

• vs. Google WorkspaceThe bundled calendar — at per-user price →
• For the portfolio entrepreneurThe reader this calendar was shaped for →
• The priceFlat, every domain — the calendar is included →
• The full FAQEvery other question, answered long-form →