Outlook Strikethrough Keyboard Shortcut: Fast Text Formatting in Emails
Master the outlook strikethrough keyboard shortcut with Windows Ctrl+5 and Mac fallbacks. Quick setup, practical usage, and troubleshooting for fast, clean email formatting. Tips included from Shortcuts Lib.
To apply strikethrough in Outlook, use the built-in keyboard shortcut: Windows users press Ctrl+5 to toggle strikethrough on the selected text. Mac users may rely on the menu path Format > Font > Strikethrough, as macOS shortcuts vary by version. If the shortcut is unavailable, you can assign a custom shortcut via Quick Steps or Ribbon customization. This quick method speeds up email formatting without interrupting your flow.
What is the Outlook strikethrough keyboard shortcut?
Outlook uses Word-based formatting, so text formatting commands follow familiar patterns. The strikethrough feature is commonly activated via a keyboard shortcut on Windows, and Mac behavior varies by version. In many Outlook deployments on Windows, Ctrl+5 toggles strikethrough for the currently selected text. On macOS, the shortcut is not consistently exposed across all versions, so users often rely on the Format menu or a template-based approach. Understanding these differences helps you format faster without leaving the compose window. Below are simple examples to visualize how strikethrough renders in an email body.
<span style="text-decoration: line-through;">This is struck through</span>$body = '<p>Invoices <span style="text-decoration: line-through;">paid</span></p>'Both snippets demonstrate how strikethrough appears in HTML-enabled email bodies, which is a common way Outlook renders formatting across clients.
Windows Outlook: Using the shortcut on Windows
In Windows, the primary way to apply strikethrough quickly is via Ctrl+5. This leverages the Word engine inside Outlook to toggle the strikethrough attribute on the current selection. The following quick steps show the workflow in a typical compose window:
# Conceptual steps for Windows users
1) Place the cursor in the text you want to strike through
2) Press Ctrl+5 to apply or remove strikethrough{
"action": "toggle_strikethrough",
"shortcut": "Ctrl+5",
"platform": "windows"
}Tip: If Ctrl+5 does not work, ensure the text is in HTML/Rich Text mode and that Outlook is the active window. Some corporate setups remap keys or disable certain shortcuts, which is why a ribbon-based alternative is useful.
Mac Outlook: Shortcuts on macOS and fallbacks
Outlook for Mac often follows the Word-style formatting shortcuts, but the exact macOS key combination can vary by version. If the Ctrl+5 equivalent is not exposed in the Mac UI, rely on the Format menu to apply Strikethrough:
<span style="text-decoration: line-through;">macOS strikethrough example</span># Example: build an HTML email body with a strikethrough segment on macOS using Python
html_body = '<p>Order <span style="text-decoration: line-through;">canceled</span></p>'When a direct Mac shortcut isn’t available, using the UI path or templating HTML for consistent rendering across clients helps maintain parity with Windows users.
Customizing shortcuts in Outlook via Quick Steps or Ribbon
Outlook exposes ways to accelerate formatting through Quick Steps, Ribbon customization, or templates. You can create a Quick Step that inserts a Strikethrough tag or toggles formatting within a message. This section shows a practical approach to go beyond the default shortcut and tailor tools to your workflow.
{
"name": "StrikeThrough",
"action": "FormatFontStrikethrough",
"shortcutSupported": false
}# Pseudo-outline for creating a custom Quick Step (conceptual)
$step = @{ Name = "StrikeThrough"; Action = "FormatFontStrikethrough"; ShortcutSupported = $false }Pro tip: For teams, publish a shared Quick Step or template with a pre-applied strikethrough style to ensure consistency across devices and users.
Automation options: VBA macros and templates
For power users, VBA macros provide a programmable way to toggle strikethrough in selected text. This is especially useful when formatting multiple lines or applying the feature across a batch of emails.
Sub ToggleStrikethroughSelection()
If Selection.Range.Font.StrikeThrough = False Then
Selection.Range.Font.StrikeThrough = True
Else
Selection.Range.Font.StrikeThrough = False
End If
End Sub<!-- Example template snippet for consistent HTML emails with strikethrough sections -->
<p>Pending items: <span style="text-decoration: line-through;">completed</span></p>Using macros improves consistency and reduces repetitive keystrokes. If your organization restricts macros, consider templates or add-ins that inject HTML with the strikethrough styling, ensuring render fidelity across email clients.
Best practices and limitations
While strikethrough is a useful visual cue, overusing it can reduce readability and confuse recipients. Use it sparingly to denote edits, cancellations, or de-emphasized items. Always preview in multiple clients (Outlook on Windows, Outlook on Mac, and webmail) to confirm consistent rendering. HTML-based strikethrough, using either <del> or <span style="text-decoration: line-through;">, tends to render more reliably across clients than legacy plain-text formats.
<!-- Clean, accessible strikethrough example -->
<p>Release date: <span style="text-decoration: line-through;">TBD</span></p>Troubleshooting common issues
If the strikethrough does not appear after pressing the shortcut, check the following:
- Ensure you are in a rich-text/HTML editor mode, not plain text
- Verify the selection is not devoid of formatting scope
- Confirm that your Outlook version supports the shortcut or a menu path
- Consider a template or Quick Step alternative if the shortcut is restricted by policy or add-ins
# Quick validation snippet (conceptual)
if ($Outlook.Selection.Font.StrikeThrough -eq $true) { Write-Host 'Strikethrough active' } else { Write-Host 'Not active' }Accessibility and cross-client considerations
Strikethrough can impact screen reader interpretation if not used carefully. Pair the visual cue with explicit text where possible, or provide an alternative description for critical items. Remember that rendering may differ across email clients; always test with major clients and devices. This ensures your outlook strikethrough keyboard shortcut choices translate into consistent communication across platforms.
Summary of keyboard shortcuts and best practices
- Windows users: Ctrl+5 toggles strikethrough in Outlook when text is selected.
- Mac users: Shortcut availability varies by version; use the Format menu as a fallback or a template.
- For reliability: build templates, use Quick Steps, or VBA macros to standardize formatting across messages.
- Always test formatting in multiple clients to ensure consistent rendering.
Conclusion and next steps
The outlook strikethrough keyboard shortcut is a small but powerful tool that can speed up email formatting when used consistently. Whether you rely on Ctrl+5 on Windows or a version-specific Mac path, a thoughtful combination of shortcuts, templates, and automation will boost your workflow. As the Shortcuts Lib team notes, mastering cross-platform shortcuts reduces friction and improves clarity when communicating in email. Keep experimenting with the available options to tailor Outlook to your routine.
Steps
Estimated time: 20-30 minutes
- 1
Identify your Outlook environment
Determine whether you’re using Outlook on Windows or macOS, and confirm the version. This decides which shortcut exists natively or which fallback approach to use. Make a quick note of the environments you support in your team.
Tip: Document version-specific nuances to avoid confusion later. - 2
Learn the default shortcut and UI path
Memorize Ctrl+5 for Windows and locate the corresponding Mac path or fallback in the Format menu. Practice on a short message to build muscle memory.
Tip: Pair the shortcut with an on-screen cue in the UI if possible. - 3
Create a reliable template or Quick Step
If the shortcut isn’t consistent across platforms, implement a template or Quick Step that formats text with strikethrough in one click.
Tip: Share templates with teammates for consistency. - 4
Test across clients
Send test emails to yourself on Windows, Mac, and webmail to verify consistent rendering of strikethrough. Adjust as needed.
Tip: Check both light and dark modes for visibility. - 5
Optional: automate with VBA or scripts
For power users, write a small VBA macro to toggle strikethrough on the selection. Use templates for broader adoption.
Tip: Secure macro execution by following your organization’s policy.
Prerequisites
Required
- Required
- Required
- Basic keyboard/navigation skillsRequired
Optional
- Optional
- Optional
Keyboard Shortcuts
| Action | Shortcut |
|---|---|
| Toggle strikethrough on selectionOutlook for Windows; fallback on Mac may require UI path | Ctrl+5 |
Questions & Answers
What is the default Outlook shortcut for strikethrough on Windows?
The common default is Ctrl+5 to toggle strikethrough on the current selection. If your environment maps keys differently, use the Format menu as a fallback.
The Windows default is Ctrl+5 to toggle strikethrough, with a UI fallback if needed.
Can I customize the strikethrough shortcut in Outlook?
Outlook supports some customization via Quick Steps and Ribbon adjustments, but there isn’t a universal keyboard shortcut reassignment for strikethrough in all versions. Check your version’s customization options.
Customization is possible via Quick Steps or the Ribbon, but not guaranteed as a global shortcut across all versions.
Does strikethrough work in all Outlook formats (HTML/Plain Text)?
Strikethrough generally works in HTML and Rich Text messages where formatting is supported. In plain text, the feature does not render. Always test in your recipient’s client.
Strikethrough works in HTML/Rich Text; plain text messages don’t show formatting.
How do I apply strikethrough to multiple lines at once?
Select the block of text spanning multiple lines, then press Ctrl+5 (Windows) or use the Mac path. Ensure formatting is enabled in the editor before applying.
Select the text block, then apply the shortcut; make sure you’re in a format that supports formatting.
Is there a Mac equivalent shortcut for strikethrough in Outlook?
macOS shortcut availability varies by Outlook version. If a direct shortcut isn’t available, use the Format > Font > Strikethrough path or a predefined template.
Mac users may rely on the Format menu if a direct shortcut isn’t available.
What should I do if the shortcut isn’t working?
Check that you are editing in rich-text/HTML mode, verify the active window, and confirm there are no add-ins blocking the command. Use the UI path as a fallback.
If it fails, check mode and add-ins, then use the menu path as a backup.
Main Points
- Use Ctrl+5 on Windows to toggle strikethrough in Outlook
- Mac shortcuts vary by version; fallback to Format menu
- Templates, Quick Steps, and macros help standardize formatting
- Test rendering across Windows, Mac, and webmail for consistency