As an Office 365 customer, all mail sent to your organization passes through Exchange Online Protection (EOP) prior to reaching your mailboxes. This ensures that spam doesn’t reach your users. If you host all of your mailboxes in the cloud with Exchange Online, mail reaches your mailboxes after passing through EOP processing. In the same manner, if you sign up for EOP and continue to host your mailboxes on premises (called a standalone scenario), perhaps to continue taking advantage of your existing infrastructure, mail passes through EOP for processing and is routed on-premises for delivery. For outbound delivery, the process works in reverse.
Data Loss Prevention (DLP) is a new feature area that helps you both protect sensitive data and inform users of internal compliance policies. DLP features help you identify, monitor, and protect sensitive data through deep content analysis. Exchange Online offers built-in DLP policies based on regulatory standards such as personally identifiable information (PII) and payment card industry data security standards (PCI), and DLP is extensible to support other policies important to your business.
Your users carry sensitive corporate information in their pockets every day. If one of them loses their mobile phone, your data can end up in the hands of another person. If one of your users loses their mobile phone, you can use the Exchange Administration Center (EAC) or the Exchange Management Shell to wipe their phone clean of all corporate and user information.

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About Office 365 Top 10 Benefits
Exchange Online  

Business Class Email

Stay on schedule and stay in sync.

Exchange online allows you to stay connected, even on the go-from your desk, to your phone to a business meeting. With exchange online, you will never be out of touch. Your email, contacts and calendar are synced, with access across all devices and computers.

Manage your IT time more effectively.

You want to spend your time communicating with the right people to keep driving your business forward—not managing your email accounts, worrying about how to protect your email, or slogging through an inbox cluttered with ads. With a simplified admin center and built-in security, Office 365 takes the work out of managing your email, so you can spend more time working on what matters.

Work Together


Work smarter with customized email

Business users require email that’s powerful enough for the work you do and that simplifies your tasks. That’s Office 365 business-class email. With 50 GB of storage per user, you can hold on to the messages and files you need. You can send messages up to 25 MB, which means you can include images and custom formatting in your messages

Mobility means you get more done and you can improve your work-life balance. You get a consistent Office experience across devices, so you can move easily from one device to the other and back again.


Customize your inbox

You can zip through your inbox and to-do list by customizing your inbox rules and notifications.

Build your brand with email

Use your own domain name with your email accounts, so every time you send a message your business name is highlighted in the footer of an email.

Get advanced email features

Some plans include archiving capabilities for legal discovery and regulatory compliance, plus an eDiscovery Center to identify, hold, and analyze data across your organization

Work smarter with customized email

People often use email to exchange sensitive information, such as financial data, legal contracts, confidential product information, sales reports and projections, patient health information, or customer and employee information. As a result, mailboxes can become repositories for large amounts of potentially sensitive information and information leakage can become a serious threat to your organization.

To help prevent information leakage, Exchange Online includes Information Rights Management (IRM) functionality that provides online and offline protection of email messages and attachments. IRM protection can be applied by users in Microsoft Outlook or Outlook Web App, and it can be applied by administrators using transport protection rules or Outlook protection rules. IRM helps you and your users control who can access, forward, print, or copy sensitive data within an email.

Easy to manage, from anywhere

Access the admin center anywhere. Quickly set up new user accounts and restore accounts deleted within 30 days. Create custom scripts and automated processes using PowerShell.

Built-in security you can trust

Your email is defended against mail threats with industry-leading anti-malware protection and anti-spam filtering.


No Spam

When you open your inbox, you want to get right to work—not wade through a clutter of ads. With Office 365, your email is free from advertising.

Your email hosting provider have sporadic uptime?

Have 99.999% reliability with Exchange Online.