To create a rule in Outlook, open Settings → Mail → Rules (or File → Manage Rules & Alerts in classic Outlook), click Add new rule, set a condition like “From [sender]” or “Subject includes [keyword],” then pick an action like “Move to folder” or “Delete.” Save, and Outlook will run the rule on every new message that matches.

Outlook rules are the built-in way to automate what happens to incoming email. They can file messages into folders, flag important senders, delete newsletters, or trigger alerts. But the exact setup is different in each version (new Outlook for Windows, classic desktop, web, and Mac), and there are a few limitations worth knowing before you invest time building them.

This guide walks through the steps for every version, what rules can and can’t do, and when a different tool is a better fit.

Understanding the basics of Outlook rules

Think of Outlook rules as a set of “if this, then that” instructions for your email. You tell Outlook what to look for in a message, and it automatically does something specific.

The goal is simple: save time, cut down on the mental energy a cluttered inbox drains, and make sure you never miss an important message.

Not all Outlook rules are the same, though. There’s a meaningful difference between server-side and client-side rules, and it can affect whether your automation runs when you’re away from your computer.

• Server-side rules: These run directly on the email server (like Microsoft Exchange). They work 24/7, even if your Outlook app is closed. They’re good for filing messages into folders or auto-forwarding. The new Outlook for Mac only supports server rules, which keeps things simple but cuts some options.
• Client-side rules: These only run when the classic Outlook application is open on your computer. They handle actions that need your local app, like playing a sound or showing a desktop alert. If Outlook is closed, your client-side rules are on pause too.

Rules are processed in the order they appear in your list, which can cause weird conflicts. A rule that moves emails from your boss to a “VIP” folder might fight with a rule that moves anything with the word “report” to a “Reports” folder. What happens when your boss emails you a report? To prevent that, Outlook has a “Stop processing more rules” option to make sure only the first matching rule fires.

One last thing: storage. Exchange Online limits the total space for all your rules to just 256 KB per mailbox. Once you hit that ceiling, you can’t create or update any more rules. It sounds like a technical detail, but for power users with dozens of workflows, it’s a surprisingly low limit.

How to create rules in Outlook (for every version)

The exact steps depend on which version of Outlook you’re using.

New Outlook for Windows and Outlook.com

The new desktop app and the web version work the same way.

According to Microsoft’s official guide:

1. Click the Settings gear icon in the top right corner, then go to Mail > Rules.
2. Click + Add new rule.
3. Give your rule a name that makes sense to you.
4. Add a condition. This is the “if” part, like “From” a specific sender or “Subject includes” certain words.
5. Add an action. This is the “then” part, like “Move to” a folder or “Delete.”
6. If you have multiple rules, check the “Stop processing more rules” box to keep them from clashing.
7. Click Save.

One important limitation: the new Outlook does not support rules for third-party accounts you’ve connected, like Gmail or iCloud. For those, you’ll have to set up sorting rules directly with that email provider.

Classic Outlook for Windows

The classic desktop version has the most detailed options, accessible through its Rules Wizard. It’s also where you’ll have to think about the client-side vs. server-side distinction.

There are two main ways to start:

• From a message: The fastest method. Right-click an email that’s a good example of what you want to automate, then select Rules > Create Rule. Outlook will pre-fill some of the conditions for you, like the sender’s name. This is what you want if you’re wondering how to create a rule from a selected email.
• From a template: For more control, go to File > Manage Rules & Alerts > New Rule. This opens the Rules Wizard, which gives you templates for common tasks like “Move messages from someone to a folder.”

The Rules Wizard walks you through a few steps: choose a template, set your conditions (the “if”), pick your actions (the “then”), add any exceptions, name the rule, and turn it on.

A useful feature here is the “Run this rule now on messages already in the current folder” option. It’s good for cleaning up an existing folder right after you create a rule.

Certain actions, like displaying a desktop alert, will trigger a warning that the rule will only run when Outlook is open.

Outlook for Mac

Outlook for Mac recently simplified its approach. To make rules more reliable, it now only supports server-side rules. Your automation will always work, even when the app is closed. The trade-off is that client-side actions like custom sounds are no longer available.

Here’s how to set one up:

1. From the top menu bar, go to Outlook > Settings > Rules.
2. Click New Rule and give it a name.
3. Choose a condition (like “From”) and an action (like “Move to Folder”).
4. Use the “Stop processing more rules” option if you need to avoid conflicts.
5. Click Save.

Features and limitations of Outlook rules

Now that you know how to build rules, here’s where they shine and where they fall short, especially for teams.

Core capabilities

For managing your own personal inbox, Outlook rules are capable. They’re particularly good at a few things:

• Sorting. You can automatically move messages based on the sender, keywords in the subject line, or whether you’re in the To or CC field. This is the quickest way to keep your main inbox focused on what needs your attention right now.
• Prioritization. Set up a rule to flag any message from your manager or with the word “urgent” in the subject. Important messages float to the top; nothing gets missed.
• Inbox cleaning. Tired of promotional emails and newsletters cluttering up your inbox? A rule can send them to a “Read Later” folder or delete them on arrival.
• Custom alerts. In classic Outlook, you can set up desktop alerts or sounds for high-priority emails, so you get an immediate heads-up when something important lands.

Limitations for team collaboration

These features were designed for individual use. In a team setting, the limits show up fast.

• They aren’t collaborative. Rules are tied to a single user’s account. You can’t create a rule to automatically assign a new customer question to the next available person on your support team. You can’t balance the workload for a shared inbox like sales@company.com. That work stays manual, which means duplicate replies or missed emails.
• They’re email-only. Business communication isn’t just email anymore. Your team is probably juggling messages from SMS, WhatsApp, website live chat, and social media. Outlook rules only work on email, so other channels get managed in separate tools. Conversations get split; customer messages slip through.
• They can be device-dependent. The client-side rule limitation is a problem for teams that need constant availability. A rule you built to notify you about an urgent lead won’t run after hours if your work computer is off. Real automation needs to be on all the time, not just when you’re at your desk.
• Rule management gets messy. As your list of rules grows, they start to conflict or break. The bigger issue is the 256 KB storage cap. Power users hit the ceiling and are suddenly unable to create any more rules. People work around it by shortening rule names or cramming multiple conditions into one rule to save bytes.

These limits show that Outlook rules are built for individual productivity. For teams that need collaborative automation across multiple channels, a different tool is a better fit.

When to consider alternatives to Outlook rules

Outlook rules are a great starting point for taming your personal inbox. When workflows involve multiple people, though, the individual-focused model runs out of room. If your team needs shared ownership, clear accountability, and a single place for all customer conversations, a more capable rule system is worth looking at.

Missive is a collaborative email client built for teams. It connects your team’s shared addresses (support@, sales@, info@) alongside personal inboxes, and it handles email, SMS, WhatsApp, Instagram, Messenger, and live chat in one place. Missive’s rules can do everything Outlook rules do and more: assign conversations in a round-robin, add internal comments for context, apply shared tags, and run automations across every channel, not just email.

Three examples of what Missive rules can do that Outlook rules can’t:

• Service level agreements: set up SLAs to maintain short response times across your whole team. Specify reminders and escalate to certain users if breached.
• Escalate urgent emails using AI: have AI process the context of incoming client emails. If they’re urgent, escalate and assign to a pre-selected person.
• Automatic follow-ups: trigger a sequence of follow-up emails based on an email you sent. Automatically stop following up once someone replies.

Here’s a deep dive into the difference between personal rules and organization rules:

FAQ

How do you create a new rule in Outlook?

In the new Outlook for Windows or Outlook.com, go to Settings > Mail > Rules > + Add new rule. Give the rule a name, pick a condition (like “From [sender]”), pick an action (like “Move to [folder]”), and save. In classic Outlook, go to File > Manage Rules & Alerts > New Rule to open the Rules Wizard. In Outlook for Mac, go to Outlook > Settings > Rules > New Rule.

How do I make certain emails go directly into a folder in Outlook?

Create a rule with a condition that matches the emails you want to sort (for example, “From: newsletter@example.com” or “Subject contains: Invoice”), then set the action to “Move to” and pick the folder. Check “Stop processing more rules” if you have other rules that might conflict. New messages matching the condition will land in the folder instead of your main inbox, and you can also run the rule on existing messages in classic Outlook via the “Run rules now” option.

How do you create a rule based on a selected email?

In classic Outlook for Windows, right-click the email and select Rules > Create Rule. Outlook pre-fills the conditions based on the selected message (sender, subject line, recipients), so you can confirm or tweak the details rather than building the rule from scratch. In the new Outlook and on Mac, the right-click option is more limited; you’ll usually need to open the full rule editor and enter conditions manually.

Can I set up Outlook rules to forward emails automatically?

Yes, but with caveats. You can create a rule with the action “Forward it to [email address]” to automatically forward matching messages. However, many organizations disable external auto-forwarding by default as a security measure against phishing and data exfiltration. If your rule silently stops working, check with your IT admin first.

Why aren’t my Outlook rules running?

The three most common reasons: (1) the rule is client-side and Outlook is closed, so it won’t fire until you open the app; (2) you’ve hit the 256 KB rules storage limit, and new rules are being silently ignored; (3) rules earlier in the list with “Stop processing more rules” are intercepting the message first. Microsoft has a broken rule troubleshooter for the first issue, and you can free up space by deleting unused rules or consolidating them.

Do Outlook rules work on mobile?

Rules created on desktop or web will run on any device as long as they’re server-side. You can’t create or edit rules from the Outlook mobile app directly; you’d need to open the web version in a mobile browser to make changes.

What’s the difference between Outlook rules and Missive rules?

Outlook rules are per-user and email-only. Missive rules are team-level and cross-channel. A Missive rule can assign an incoming conversation to a specific teammate, apply tags visible to everyone, add internal chat messages for context, and run across email, SMS, WhatsApp, Instagram, and live chat. Outlook rules can’t assign, can’t add team notes, and don’t know about anything outside of email.

Missive is a collaborative email client built for teams that have outgrown personal rules. Connect your team’s shared addresses, automate assignments with AI-powered rules, and handle every customer channel from one place. Try Missive free.