Outlook Mobile Calendar and Email in One App: Setup Guide

Running your calendar and email in one app is the whole appeal of Outlook mobile, but combining a second calendar — a personal Google account, an iCloud calendar, a shared family calendar — into that same view isn't something the app walks you through on first launch. This guide covers how to add a Google or iCloud calendar to Outlook mobile, how to view every connected calendar together, and how to share your availability in a reply, since that last part changed recently.

The steps below follow Microsoft's own Outlook mobile documentation, checked against the app's current behavior — including one recent change the published help article hasn't caught up with yet. For the most current interface details, the Microsoft Outlook help center is the primary reference.

The short answer#

Add the second calendar by adding its email account from the Outlook profile menu: tap your profile picture, then Add Email Account, and choose Google or iCloud. The calendar syncs in during that same step — Outlook mobile doesn't offer a way to connect a calendar on its own, separate from the mailbox.

To see every calendar in one place, open the Calendar tab at the bottom of the screen, tap your account icon in the top corner, and check the box next to each calendar you want visible. Checking more than one overlays their events into a single color-coded view.

For sharing availability inside a reply: as of mid-2026, Microsoft removed the automatic Send Availability picker from the compose screen on both iOS and Android. Where it used to insert open timeslots for you, you now check your calendar and type the times into the reply yourself — covered in detail below.

Before you start#

Have the following ready before opening the account setup screen.

• An up-to-date Outlook app. The account-adding flow and the calendar visibility list have both changed across recent releases, and an old build may not match these steps exactly.
• Your Google or iCloud sign-in ready. Google authenticates through a Google sign-in screen inside the app. For iCloud with two-factor authentication on, generate an app-specific password at appleid.apple.com — your regular Apple ID password won't work here.
• An acceptance that Outlook only offers full account connections. Adding a calendar means adding its mailbox, contacts, and calendar together; there's no calendar-only option the way desktop Outlook offers through a web subscription.
• Awareness that IMAP accounts carry no calendar at all. If you add a non-Google, non-Apple, non-Microsoft address as IMAP, its calendar stays wherever it already lives — Outlook only pulls calendar data over the native Google and Apple connections, plus its own Exchange and Microsoft 365 protocol.

How to add a Google or iCloud calendar to Outlook mobile#

1. 1

   Open the profile menu

   Tap your profile picture in the top-left corner of the inbox. On Android you may see a hamburger icon there instead — tap it, then tap your account avatar at the top of the panel that slides out.

2. 2

   Tap Add Email Account

   Below your existing accounts, tap Add Email Account (iOS) or the plus icon at the bottom of the account list (Android).

3. 3

   Enter the address and confirm the provider

   Type the Google or iCloud email address. Outlook detects the domain and offers to connect it as a Google or Apple account. If it can't tell from the domain, pick the provider manually from the list it shows.

4. 4

   Sign in and grant calendar access

   Google opens its own sign-in screen — approve mail, calendar, and contacts access when it asks, since declining calendar access is the most common reason a newly added account shows mail but no events. iCloud opens an Apple sign-in form; use the app-specific password if two-factor is on.

5. 5

   Confirm the calendar appears

   Switch to the Calendar tab. The new account's events should appear within a minute or two of its first sync finishing. If they don't, see the syncing section further down.

View every calendar together#

Once two or more accounts are connected, Outlook doesn't overlay their calendars automatically — each one starts out visible on its own, split by account. Combining them into one screen is a separate step.

Open the Calendar tab, tap your account or profile icon in the corner, and a checklist appears: your primary calendar, any secondary Google or iCloud calendars, shared calendars you've been given access to, and often a Birthdays calendar Outlook creates on its own. Check the ones you want visible. Checking two or more shows their events together in one day or month view, each calendar in its own color.

Share your availability in an email reply#

This is the step that changed. Through early 2026, tapping the calendar icon above the keyboard while replying to a message opened a Send Availability option: you picked open timeslots and Outlook inserted them into the reply as a block the recipient could tap straight into their own calendar.

Microsoft removed that picker from the compose screen on both iOS and Android in a mid-2026 app update. Tapping the calendar icon during a reply now opens the create-a-new-event screen instead — there's no menu offering to share availability from it. The Microsoft support article describing the old flow is still published and hasn't been updated to reflect the change, so if you've found it and can't reproduce the steps, that's why.

The workaround is the manual version of the same idea. Open the Calendar tab, note two or three open slots, switch back to the reply, and type them out — for example, free Tuesday afternoon or Thursday morning, whichever suits. It's slower than the one-tap version, but it's the only path Outlook mobile currently offers for this.

Platform differences: iOS vs Android#

Most of the mechanics above work the same on both platforms. The differences that actually matter are in navigation and in what recently changed.

Calendar not syncing? What to do when it doesn't work#

Most calendar sync problems in Outlook mobile trace back to one of a handful of causes. The table below maps the symptom to the likely reason and the fix.

A faster way to turn email into confirmed meetings#

Manually cross-referencing a reply against your calendar, now that Outlook's one-tap picker is gone, is exactly the kind of small repeated task that adds up over a week. AI Emaily is an AI email assistant that reads a thread for meeting intent — a proposed time, a video link, a venue — and surfaces a one-tap prompt that pre-fills an event with the details already pulled from the message, so you confirm instead of retyping them into a reply.

It's a self-contained calendar built into the inbox rather than a two-way sync with Google or Outlook's own calendar, so it complements what you've set up here instead of replacing it. We build AI Emaily, and a 7-day free trial lets you see the extraction on your own mail.