Welcome to the great business email debate: Gmail or Outlook?

Emails are the lifeblood of many businesses. They’re how people inquire about your services, how you communicate with clients and vendors, and maybe how you communicate internally with your team.

We’ll do an in-depth analysis of the two big email providers (Gmail vs Outlook) so you can decide which email service to build your communication system around.

We’ll cover:

• Individual features and functionality
• Collaboration and team features
• Security and privacy
• Pricing

Gmail and Google Workspace

There are two ways to create an email with Google.

You can have a free, personal email address that ends in @gmail.com, with limited storage (15 GB across your Google suite). Or you can pay for Google Workspace (Gmail for business) and create an email address with your business domain (@yourcompany.com), get more storage, and more admin/security controls over your email service.

The Google Workspace business plans vary:

• Business Starter ($6/user/month) with 30 GB of storage/user
• Business Standard ($12/user/month) with 2 TB of storage/user
• Business Plus ($18/user/month) with 5 TB of storage/user
• Enterprise (custom pricing)

Whether you have a Gmail account or a Google Workspace account, your inbox looks similar.

Features and functionality

• Labels
  • Gmail labels are flexible and meant to be the main organizational feature.
  • You can use Gmail labels for everything from light project management (To-do, in-progress, blocked, in review) to client filing (names of each client account or project code), to topical sorting (personal, travel, etc.).
• Categories
  • Gmail can auto-detect what an email is about and assign it to one of their four default categories: Primary, Social, Promotional, and Updates.
  • This default functionality was introduced in 2013 and can be changed in settings.
• Search
  • Gmail’s search is fast and quite accurate at surfacing relevant results. You can filter by sender, date range, or labels. Note: Gmail’s search primarily looks at email and attachments, and actively ignores items like calendar events and tasks.
• Calendar
  • The default calendar app of the Google suite offers some helpful business tools. Beyond the standard ability to create an event and invite attendees, you can easily create scheduling links to share, and it’s smart enough to detect event invites in your Gmail inbox and auto-create them in your calendar.

Gmail’s collaboration and team tools

This is where Google shines. Their real-time collaborative documents were a game changer when they launched back in 2006 and have been the preferred tools for many organizations ever since.

• Google Docs, Sheets, Slides
  • Compared to Microsoft, these tools were built with real-time collaboration first. If you plan on working on documents and files with other people, Google is the way to go.
• Google Drive — cloud file storage and sharing.
• Google Chat — instant messaging.
• Gmail shared mailbox
  • The most common use case of a shared inbox is a business’s info@, sales@, and support@ inboxes.
  • The shared inbox lets multiple people log in and access it without sharing passwords.
  • Gmail’s shared inbox has the same interface as its regular inbox. You can label, filter, and search in the shared inbox just as you would your personal.

Gmail’s security and privacy

When looking at Gmail’s security measures for Google Workspace accounts, two stand out:

1. Confidential mode — not quite end-to-end encryption, but it lets users set expiration dates, revoke access, and restrict forwarding/printing of emails.
2. Anti-phishing protection — using machine learning, Gmail flags suspicious attachments, links, or spam emails with a prominent orange banner.

Gmail uses TLS for email transit and has encryption at rest and in transit.

Common user complaints

With over 1.8 billion Gmail users worldwide, there are some well-known issues and tradeoffs in Gmail’s functionality. Three common ones:

• Email size limits — Gmail truncates emails at 102 KB; you’ll need to click a “view more” link to read long emails in their entirety. If you send long emails, you’ll likely get frustrated by this limitation.
• Threaded emails — Gmail sorts related emails into a single thread, and groups them based on subject lines and reply sequences. Helpful if you’re receiving duplicate newsletters (you just want to see one new email for all those duplicates), but if your client sends you different topical emails with the same subject line, Gmail will also group them together.
• Offline mode — Gmail’s offline mode works best on Chrome and has been reported to be less reliable on other browsers or operating systems. Local storage is capped at 90 days of email history, so any older emails won’t be accessible until you’re connected to the internet again.

Outlook and Microsoft 365

Like Gmail, Outlook is Microsoft’s free, personal email service. Microsoft 365 is essentially Outlook for business, the equivalent of Google Workspace.

Here’s an overview of the Microsoft 365 plans (assuming an annual payment, as of April 2026):

• Business Basic ($6.30/user/month) with 50 GB email storage and 1 TB of OneDrive cloud storage.
• Business Standard ($13.13/user/month) with all of the above, plus desktop versions of Microsoft Office apps (5 devices per user).
• Business Premium ($23.10/user/month) with all of the above, plus security features like Microsoft Defender for Business and device management tools for company devices.
• Enterprise (ranges from $36 to $57/user/month) with Exchange Online email hosting, large amounts of mailbox storage (100 GB/user), and more advanced security and privacy controls. Microsoft 365 enterprise plans typically start at 300 users.

Features and functionality

• Outlook folders
  • The biggest difference between labels and folders (Gmail vs Outlook) is the one-to-one relationship. One email lives in one folder at a time in Outlook, whereas one email can have multiple labels attached to it in Gmail.
  • Many users appreciate the drag-and-drop functionality in Microsoft Outlook that lets you easily move an email from one folder to another.
• Outlook search
  • Outlook’s search function goes beyond emails and attachments, pulling in contacts, calendar events, and tasks. It’s more comprehensive than Gmail’s search, but that also impacts its speed. It’s often slower, especially with large mailboxes.
• Outlook calendar
  • Outlook’s default calendar has a deep integration with Microsoft Teams and Microsoft Office. So if you use Microsoft everything, keeping the Outlook calendar will be a smoother experience.
• Outlook rules
  • Outlook has two main types of rules. The first only runs if your Outlook email is open (like a notification sound), and the second runs on the mail server all the time (sorting certain emails into certain folders, custom spam/junk mail removal, auto-forwarding emails when you’re OOO, etc.). The second set of rules is primarily for incoming emails, depends on if/then statements, and doesn’t allow for more complex conditions (if/else) or preferences.

Outlook’s team collaboration tools

• Word, Excel, PowerPoint
  • The original productivity office suite, focused on individual use. There’s a reason Excel is still the market leader for anyone who needs deep functionality. In recent years, Microsoft added collaborative features to all these tools, however they’re often less smooth compared to Google Workspace.
• OneDrive — cloud storage and file sharing.
• Microsoft Teams — team chat and video conferencing.
• Outlook shared mailbox
  • Very similar to Gmail’s shared mailbox, with one key difference: you can integrate an Outlook shared inbox with ticketing (SharePoint) and automation (Power Automate) tools included in the Microsoft 365 suite. This lets you create and track “tickets,” which is helpful for your support@ inbox.
  • This functionality is limited and relies heavily on notifications and collaboration outside of the inbox (in Microsoft Teams).

Outlook’s security and privacy

With thousands of enterprise customers, Outlook’s security and privacy are tuned for those standards.

1. Office Message Encryption — send encrypted emails with controls on whether those emails can be forwarded, printed, or copied.
2. Advanced Threat Protection/Microsoft Defender — Microsoft’s version of anti-phishing protection. It offers real-time URL scanning through its Safe Links feature.
3. Information Rights Management — lets users control forwarding/copying of email contents.

Like Gmail, Outlook uses TLS encryption for email in transit. Data at rest is also encrypted.

Common user complaints

• Search delays and freezes — because Outlook has a more comprehensive search (looking for things beyond email and attachments) and supports larger inboxes, search is often slow or doesn’t work at all.
• Visibility issues in shared inboxes — Outlook has shared mailboxes, but lacks functionality around coordination or collaboration. Multiple people can be in your sales@ inbox without privacy issues, but you still don’t know who’s working on which email.
• Mobile Outlook apps are missing features — you can’t create rules and automations, advanced search strings aren’t supported, and there are no custom views.

So which email service is better, Gmail or Outlook?

As with most decisions in life, it depends.

Google Workspace is collaborative at its core, though its shared inbox and email automation options are more limited.

Microsoft Outlook is more robust overall, but can feel complex and lack modern design.

If your business prioritizes simplicity and collaboration with clients, team members, and vendors, err on the side of Gmail and Google Workspace.

If you work in a field with a lot of sensitive information (law, accounting), err on the side of Outlook for their very high standard for security controls.

Whether you choose Gmail or Outlook, there are some business email hygiene factors to follow:

1. Don’t share passwords for shared inboxes
2. Say no to forwarding if you need to collaborate
3. Always have anti-phishing and spam protocols in place for your team. Test often.

Which email service is best for teams?

Neither Outlook nor Gmail was really designed for teams. They added lightweight features (shared mailboxes), but if you truly live in your inbox every day, replying to clients, team members, and vendors, you’ll want something designed specifically for team collaboration and shared inboxes.

That would be us: Missive.

Missive is an email client that sits on top of your chosen email service, whether that’s Gmail, Outlook, Yahoo Mail, or Apple Mail.

It has all the features loved in Gmail and Outlook (labels, rules, snoozing) but supercharged with more functionality, including AI rules that allow for auto-translation, auto-labeling, and more.

But don’t just take our word for it. Here’s Arif, a lawyer and long-time Outlook user, who recently signed up for Missive:

When I open Missive, I can hit Inbox Zero quickly. I never had that feeling with Outlook.

And here’s Pat, a property manager and Gmail user, who recently signed up for Missive:

We’ve tried so many shared inbox solutions. Missive was unexpectedly powerful. Suddenly, we weren’t scrambling over lost emails or letting days slip by.

So whether you’re Team Gmail for business or Team Outlook for business, you can try Missive today and get the best collaborative email client for businesses.