Take control of your Outlook like never before with Kutools — the all-in-one productivity add-in designed to simplify every step of your email workflow. From AI-powered smart replies and instant translations to powerful bulk actions and intelligent scheduling, Kutools helps you manage your inbox faster, smarter, and with less effort. Fully compatible with all Microsoft Office languages, it’s built to fit seamlessly into your Outlook, so you can focus on what matters most — getting things done.
100+ powerful features for Outlook
Includes AI tools like smart reply and summarization
Supports all Microsoft Office languages
Free to use for 30 days, no limitations
Download PurchaseKutools streamlines daily email tasks with batch tools for sending, forwarding, and managing attachments — saving you valuable time.
Smart AI features — including instant replies, content summarization, email drafting, and translation — make your communication faster, more accurate, and contextually precise.
Kutools is built to work naturally within Outlook’s interface, with intuitive tools that feel like native features — no steep learning curve.
Download NowDesigned for global users, Kutools supports all Microsoft Office languages — eliminating language barriers and making every feature fully accessible, no matter your preferred language.
Simplify your daily Outlook tasks with the AI Mail Assistant from Kutools. This intelligent tool learns from your previous emails to generate accurate responses, enhance your email content, and assist in drafting or refining messages effortlessly. It can also summarize email threads and translate them into any language, making communication faster and more effective. With just one click, you can reply, compose, rewrite, summarize, or translate — transforming email management into a smooth, mistake-free experience. Embrace this innovation for clearer, more professional communication.
Don’t have your own AI key? Get a Kutools AI key — it includes 100 free uses across all AI-powered features.
By default, Outlook only allows you to set up rules for automatic Cc.
The Auto CC/BCC feature in Kutools for Outlook makes it easy to automatically Cc or Bcc different recipients based on multiple customizable conditions. Unlike Outlook’s built-in rules, which only support "Or" conditions, this feature also supports the unique "And" logic — allowing you to apply multiple rules simultaneously and handle complex Cc/Bcc scenarios with greater flexibility.
Setting up an auto-reply is helpful when you're busy or out of the office, such as during a vacation. It's a polite and professional way to let senders know you’ve received their messages and will respond as soon as possible.
Kutools for Outlook’s Auto-Reply feature lets you set up custom auto-responses for one or more email accounts at the same time. You can personalize the subject and message content, and enable or disable the feature with just a few clicks.
When you're busy or out of the office, you might not be able to respond to emails promptly. In that case, you can automatically forward incoming messages to someone else who can reply on your behalf.
The Auto Forward feature in Kutools for Outlook allows you to automatically forward all incoming emails — or only specific ones based on rules — to designated recipients. Unlike Outlook’s built-in functionality, this feature supports both “And” and “Or” logic when creating rules, giving you more control and flexibility.
Replying to emails one by one is time-consuming — especially since Outlook only allows you to respond to one email at a time.
Kutools for Outlook offers a simple solution that lets you reply to multiple emails at once using the same message template. Just select the emails, choose a template, and send — no more replying one by one.
The Send Separately feature allows you to send the same email to multiple recipients — each with a personalized greeting inserted automatically. Every email only shows the current recipient’s address, keeping others’ information private.
When recipients receive the email, they’ll only see their own name — such as “Dear Sally” or “Dear Peter.” This personal touch increases the chances that your message will be opened and not marked as spam.
Once duplicates appear in Outlook folders, removing them manually can be time-consuming and frustrating.
Kutools for Outlook offers Delete Duplicate Emails, Contacts, and Tasks features that let you quickly remove duplicates based on your chosen criteria — helping keep your folders organized and improving Outlook’s performance.
👉 Learn more about these features:Delete Duplicate Emails, Delete Duplicate Contacts, Delete Duplicate Tasks.
The Detach Attachments feature allows you to remove attachments from selected emails and save them to a specific folder. After detaching, the attachments are replaced with clickable hyperlinks inside the original emails, so you can access the files quickly and easily.
The Auto-Detach Attachments feature automatically removes attachments from all or selected incoming emails based on rules you define. This helps reduce the size of your mailbox and data files, improving Outlook’s performance.
If you need to download and save attachments in bulk, Kutools for Outlook’s Save & Auto-Save Attachments feature is your best solution. Use Save Attachments to manually extract all or specific attachments from selected emails. Use Auto-Save Attachments to automatically save attachments from all or specific incoming emails based on custom rules.
After saving, you can delete large or unwanted attachments to reduce the size of your mailbox and data files.
Having too many attachments can quickly increase the size of your Outlook data file. One of the most effective ways to manage this is to compress attachments and reduce their size.
With Kutools for Outlook, you can use Compress All to manually compress attachments in selected emails, or enable Auto Compress to automatically compress attachments as emails arrive.
You can also use the Uncompress All feature to easily restore all compressed attachments.
The Statistics feature in Kutools for Outlook gives you detailed insights into how many emails you’ve received or sent each day, week, month, or within a specific date range.
The tools are organized below according to the Ribbon groups in which they appear.
![]() |
![]() |
Help |
![]() | |
![]() | |
Related Group Features |
Note: The Kutools tab appears when you open an email in the Outlook reading pane.
![]() |
![]() |
Related Group Features |
Note: The Kutools tab becomes visible when an email is opened in the Outlook reading pane.
👉 Experience a faster, smarter Outlook — download Kutools for Outlook for free today!AI Mail Assistant: AI Mail Assistant utilizes the most advanced AI technology to assist you in replying to emails swiftly, precisely, and intelligently. Moreover, it optimizes email content, summarizes email messages, translates them into various languages, and extract the important info from the email contents, and analyze the emails, Additionally, you can create new templates to suit your specific needs, such as identifying contract loopholes.
AI Utilities:
Tip: If you don’t have your own AI key, you can register for a Kutools AI key to get 100 free uses across all AI-powered features.
Smart Recipients: With cross-account contact access, advanced search, effortless sorting and filtering, customizable display options, and intuitive visual indicators, Smart Recipients ensures that your email communication is seamless and efficient.
Smart Address Book: Access contacts across accounts with ease. Quickly switch between accounts, search with full-field filters, display custom contact fields, and sort flexibly—all in one powerful contact management tool.
Bulk Processing: Includes a set of tools for bulk processing emails
Add Contacts:
Tab Bar: Enable a tabbed interface in Outlook. All open windows—emails, contacts, tasks—are displayed in a tab bar for quick, easy switching between them.
Resource Pane: When enabled, a pane appears on the right side of the Outlook window (in the reading pane or pop-up). From here, you can insert emojis, AutoText entries, or bookmarks into your messages.
Toolbar: Enable this to display a floating emoji toolbar in Outlook, allowing you to insert emojis quickly while composing messages.
Utilities: When enabled, a pane appears on the right side of the Outlook window (in the reading pane or pop-up). From here, you can insert emojis, AutoText entries, or bookmarks into your messages.
Snooze: Temporarily move selected emails to the Snooze folder and bring them back to your inbox at a scheduled time.
Schedule Email: Customize when your email is sent. The message will be delivered automatically at the scheduled time you set.
Recurring Email: Customize when your email is sent. The message will be delivered automatically at the scheduled time you set.
Delay Email: Delay the delivery of all outgoing emails by a specified time. During this delay, you can freely cancel or edit the email before it's actually sent.
Send Separately: Send the same email to multiple recipients individually, each with a personalized greeting (e.g., “Dear John,” “Dear Sarah”)—without exposing other recipients' addresses.
Reply with Attachment: Keep original attachments when replying to an email—attachments won’t be lost during the reply.
Reply All with Attachment: When replying to all recipients, this feature ensures the original attachments are retained in your response.
Respond:
Advanced Rules: Provides more rule types and customization options than Outlook’s default settings—giving you greater control over how emails are handled.
Anti-Phishing: Automatically or manually check hidden links in emails and reveal the actual URLs—helping you avoid phishing scams and stay safe online.
Junk: A comprehensive group of tools to block or unblock specific emails and reduce unwanted messages in your inbox.
Add date into subject when creating a new email: Automatically insert the current date into the subject line when composing a new email.
Add a signature with date when create, reply to and forward email: Automatically include the current date in your signature when composing, replying to, or forwarding emails.
Always reply with default account: Ensure that all replies are sent from your default email account, regardless of which account received the message.
Add greeting when create, reply to and forward an email: Automatically insert a personalized greeting into the email body when composing, replying to, or forwarding messages.
Include myself when reply all: Automatically include your own address in the recipient list when using "Reply All".
Warning when Reply / Reply All: Show a confirmation prompt when replying to a message with multiple recipients.
Warning me when reply all to a message that have me in Bcc: Display a warning dialog if your address is in the BCC field of an email you’re replying all to.
Use default account to forward: Automatically use the default account when forwarding emails.
Show: It will display a notification to tell you that what Kutools for Outlook has done for you. There are 6 options:
Enable Log: Keep a log of all successful and failed automated actions performed by Kutools for Outlook.
Change default text zoom: Adjust the default zoom level for reading, composing, replying, and forwarding emails.
Enable query builder: Quickly enable Outlook’s hidden Query Builder for advanced search functionality.
Change maximum attachment size: Modify the attachment size limit to accommodate larger files.
Configure attachment types: Unblock or allow access to specific file extensions in email attachments.
Change the default attachment saving folder: Specify a default folder for saving email attachments.
Log: It helps to record the successful and failed results for the automatic operations of Kutools for Outlook.
Check for Updates: Check for and install the latest version of Kutools for Outlook.
Help:
Statistics: Quickly count emails in Outlook based on specific time periods or folder selections. You can optionally export the results to a new file, such as an Excel workbook. This tool is ideal for generating email activity insights.
Report:
Delete Duplicate Emails: Quickly scan and delete duplicate emails from selected folders across one or multiple accounts. Optionally, move duplicates to a specific folder instead of deleting them permanently.
Delete Duplicate Contacts: Delete duplicate contacts from one or multiple contact folders at once. You may also choose to move duplicates to another folder instead of deleting them.
Note: By default, duplicates are defined as contacts with the same Full Name and Email 1 Address. You can customize matching criteria.
Merge Duplicate Contacts: Merge duplicate contacts in one or more folders using specified matching fields.
Note: Default duplicate fields are Full Name and Email 1 Address, which can be customized.
Delete Duplicate Tasks: Quickly remove all duplicate tasks in a single folder or across multiple folders—keeping only one copy of each.
Remove Subject Prefix: Automatically remove common reply/forward prefixes such as RE: or FW: from selected emails or from entire folders. You can also define custom prefixes to remove.
Delete:
Attachment Manager: The Attachment Manager provides a centralized way to manage multiple attachments across multiple emails. You can quickly save, delete, compress, or detach attachments in bulk. It also supports automation—automatically detaching or compressing attachments for incoming and outgoing emails based on your rules.
Attachment Tools: This group collects some useful tools for easily handling Outlook attachments:
Auto Save attachments:Automatically save all incoming attachments to a specific folder. Rules can be set to save only attachments that meet certain conditions (e.g., by file name, sender, size, type).
Auto Detach attachments: Automatically detach all attachments from incoming emails. You can configure rules to control which types of attachments to detach.
Auto Compress attachments: Automatically compress attachments in both incoming and outgoing emails. Custom rules allow you to specify conditions for when compression occurs.
Attachment Options: Click the right-arrow button in the Attachments group to open Attachment Options. Here, you’ll find useful settings for managing how attachments are saved, detached, and compressed—making it easy to fine-tune your workflow.
Utilities Group:
Auto Reply: Easily create auto-reply rules for one or multiple accounts. Customize the subject and message content to fit your out-of-office or busy status scenarios.
Auto Forward: Automatically forward incoming emails to specific recipients based on customizable rules. Example rules include:
Auto CC / BCC: Automatically add CC or BCC recipients when sending emails based on specific rules. Example scenarios include:
Split to Multiple Contact Groups: Quickly split a single contact group (distribution list) into two or more smaller groups for better management.
Break Contact Group: Convert all members of a contact group into individual contact entries in your Contacts folder.
Folder:
Advanced Search: Easily search across Emails, Contacts, Tasks, Appointments, and Meetings using one or more conditions simultaneously. You can save your search settings as scenarios for reuse—saving time and improving productivity.
Search emails by sender
Search emails by recipient:
Search emails by current reply to:
(Search) This Contact: Quickly find all emails that include a specific contact from your address book.
Clear Search History: Instantly remove all recent Outlook search history with a single click.
Advanced Print: A powerful printing tool that enables flexible print options for various Outlook items.
Print Selection: Print only the selected content from an email—no need to print the entire message.
Remove Birthday Reminder: Disable all birthday reminders from your Outlook calendar with a single click.
Restore Birthday Reminder: Easily re-enable all previously disabled birthday reminders in your calendar.
Duplicate Names: Remove all duplicate email addresses from the To, Cc, and Bcc fields with a single click.
My Names: Automatically remove your own email addresses from the To, Cc, and Bcc fields when composing a message.
Insert History Message: If you've used Reply Without History or Reply All Without History, click this button to reinsert the original message content into your current reply window.
Send Separately: Send the same email to multiple recipients with personalized greetings—without revealing other recipients’ addresses.
Direct Reply To: After setting a default reply-to address, you can disable it for individual emails using this option while composing.
Skip Auto CC / BB: Temporarily bypass auto CC or BCC rules for the current email, even if it matches existing conditions.
Rely Selection: Reply to an email using only the selected portion of text—perfect for quoting or referencing specific content.
Signature to Contact: Convert the sender’s signature into a contact entry with one click.
Information: Quickly count the number of members in a contact group with a single click.
Kutools for Outlook boosts productivity with 100+ Pro features.