VOL. 1 · No. 1 The Inbox Comics · 2026 Series All Ages · Reference

THE INBOX QUARTET

★ A Side-by-Side Comparison Comic ★

Featuring Outlook & three contemporary email platforms — each introduced in their own panel, with the headline figures publicly stated as of 2026.

PG. 1
In the inbox of every working day, four characters appear most often…

MEET THE CAST!

Four email platforms — one long-running incumbent & three alternatives — each with its own audience, owner, & way of working. Turn the page to meet them, one panel at a time.

PG. 2
Outlook says: I'm the email & calendar app that ships with Microsoft 365. I've been around since 1997 with Office, & my web side (formerly Hotmail) joined Microsoft in 1997 and was rebranded Outlook.com in 2012.
Tale of the tape: I'm part of a suite that reports 400 million+ paid seats on Microsoft 365 globally, & my consumer side has 400 million+ active users. I'm owned by Microsoft.
EST. 1997 / 2012 MICROSOFT FREE OR $6.99+/MO
26
"OUTLOOK"
THE INCUMBENT
"GMAIL"
THE COMMUTER
PG. 3
Gmail says: I launched in 2004 & today I'm reported to have 1.8 billion+ active users. I'm part of Google Workspace, with calendar, drive & meet built into one ecosystem.
House style: Free with 15 GB of shared storage on a personal account. Workspace plans for organisations start around $6 / user / month. I'm owned by Google (Alphabet).
EST. 2004 GOOGLE FREE 15GB · WORKSPACE $6+
PG. 4
Proton Mail says: I started in Geneva, Switzerland in 2014. I encrypt messages between Proton accounts end-to-end & store mail with zero-access encryption — meaning the provider can't read it.
Tale of the tape: I report over 100 million accounts across Proton's services. Free with 1 GB; Mail Plus from $3.99 / mo; the bundled Proton Unlimited from $9.99 / mo. I'm operated by Proton AG, with a non-profit foundation.
EST. 2014 SWITZERLAND FREE OR $3.99+/MO
"PROTON MAIL"
THE PRIVACY-FIRST
"APPLE MAIL"
THE BUILT-IN
PG. 5
Apple Mail / iCloud+ says: I'm the email app that ships with every Mac, iPhone & iPad. The Mail app dates back to OS X in 2001; iCloud Mail launched in 2011, succeeding MobileMe.
House style: Mailboxes through Apple are free with an Apple ID (5 GB iCloud). Storage upgrades via iCloud+ start from $0.99 / mo. The Mail app can also connect to other providers. I'm owned by Apple Inc.
EST. 2001 / 2011 APPLE INC. FREE OR $0.99+/MO

★ THE CAST STAT-SHEET ★

a flat side-by-side, no winners declared — figures publicly stated as of 2026, approximate

Character → Outlook Gmail Proton Mail Apple Mail / iCloud+
First appeared 1997 / 2012* 2004 2014 2001 / 2011*
Headline reach 400 M+ active (consumer); 400 M+ paid M365 seats 1.8 B+ active 100 M+ accounts (Proton-wide) tied to Apple ID base; iCloud reach is large but not separately disclosed
Owner Microsoft Google (Alphabet) Proton AG (non-profit foundation) Apple Inc.
Free tier Yes (Outlook.com) Yes (15 GB shared) Yes (1 GB) Yes via Apple ID (5 GB iCloud)
Paid entry $6.99+/mo (Microsoft 365 Personal) $6+/user/mo (Workspace Business) $3.99+/mo (Mail Plus) $0.99+/mo (iCloud+ 50 GB)
House specialty integrated suite (Office, Teams, calendar) web-first; Workspace ecosystem; large storage tiers end-to-end & zero-access encryption; Swiss jurisdiction built-in to Apple devices; Hide My Email; custom domain on iCloud+
Origin / HQ Redmond, WA, USA Mountain View, CA, USA Geneva, Switzerland Cupertino, CA, USA

* shows year of original product / year of present-day brand or service.

FROM THE EDITOR'S DESK

This issue introduces four email platforms in turn, each with the figures it publicly states. None is presented as superior to another — readers are encouraged to weigh the differences against their own use case.

Where two services are bundled (e.g. the Outlook app & the Outlook.com webmail, or Apple Mail & iCloud+ storage), they are noted together in the same panel.

★ INSIDE ★ FOUR PANELS,
ONE TABLE No winners declared — just a flat comparison of what each platform publicly says about itself.

★ COLOPHON ★

This comic is an independent comparative reference. It is not produced by, sponsored by, or affiliated with any of the named platforms. All names, marks, & logos belong to their respective owners.

Figures are drawn from publicly stated information & should be read as approximate. Readers are encouraged to consult each provider's current site for present-day particulars.

The Inbox Comics · Vol. 1 · No. 1 · 2026 · printed in pixels