Microsoft Outlook is the widely-used email and productivity client within the Microsoft 365 ecosystem, combining email management, calendar scheduling, task tracking, and contact organization in a single application. In 2026, Outlook exists in two distinct versions: new Outlook (cloud-first, web-based architecture replacing the legacy client) and classic Outlook (traditional desktop app supported until at least 2029), with Microsoft delaying the forced enterprise migration to March 2027. The most critical insight for mastering Outlook: features like Copilot AI, Rules, Quick Steps, and Focused Inbox can dramatically reduce time spent on email, but their capabilities differ significantly between new and classic Outlook — knowing which version you're on determines which features are available to you.
What This Cheat Sheet Covers
This topic spans 19 focused tables and 156 indexed concepts, 96 flashcards, 6 practice tests with 171 questions. Below is a complete table-by-table outline of this topic, spanning foundational concepts through advanced details.
A jump-to index of every table row in this cheat sheet.
An interactive map of every table and concept in this topic.
Table 1: Email Actions and Navigation
The everyday verbs of email: compose, reply, forward, send, delete, archive, plus the keys that let you clear an inbox without reaching for the mouse. The habits that save the most time are knowing who each reply reaches, where a message actually waits before it leaves, and the difference between moving mail out of sight and destroying it.
| Action | Example | Description | |
|---|---|---|---|
Ctrl + N | Creates a new item matching the current view: a blank message in Mail, an event in Calendar, a contact in People. | ||
Ctrl + R | • Replies to only the original sender • attachments from the original message are not carried over. | ||
Ctrl + Shift + R | • Replies to the sender plus everyone on the To and Cc lines • Bcc recipients are never included. | ||
Ctrl + F | Sends the message to a whole new set of recipients, and any original attachments travel with it. | ||
Ctrl + Enter | • Hands the draft to the Outbox, then it moves to Sent Items once the server accepts it • A lost connection leaves it queued in the Outbox | ||
Send dropdown > Schedule send | • New Outlook holds the message in the Draft folder until the chosen delivery time • classic Outlook uses Do not deliver before and holds it in the Outbox. | ||
Settings > Undo send (up to 10s) | • Pauses an outgoing message briefly so you can cancel it before it leaves • not the same as recall, which chases a message already delivered. | ||
Delete | • Moves the selected message to the Deleted Items folder, where it can still be dragged back • Shift + Delete bypasses that folder with no way to recover. | ||
Backspace | • Moves the message to the Archive folder without deleting it • That folder is never emptied automatically and stays searchable | ||
Click reactions button on message | • Send a thumbs up, heart, celebrate, laugh, surprise, or sad reaction without composing a reply • both people need Exchange Online, otherwise it arrives as a fallback email. | ||
Ctrl + Q / Ctrl + U | Toggles the message read/unread flag without opening or moving it. | ||
Ctrl + E or F3 | • Searches your entire mailbox by default, not just the open folder • select a folder first to narrow it; a separate Online Archive is not included. | ||
Ctrl + Shift + I | Instantly navigates to the Inbox folder from any view. | ||
Ctrl + 1 | Switches the main view to Mail from Calendar, Tasks, or other modules. | ||
Ctrl + 2 | Switches to Calendar view to see appointments and meetings. | ||
Ctrl + 3 | • In new Outlook: opens Copilot pane • in classic Outlook: opens Contacts/People view. | ||
Ctrl + 4 | • In new Outlook: opens People view • in classic Outlook: opens Tasks view. |