Exchange Online vs. Office 365: Which plan is a better fit?
Get the essential productivity tools that just keep getting better with Microsoft 365. Exchange Online is a hosted solution that you can get by itself or with a Microsoft 365 subscription. Exchange Server 2019 is an on-premises solution.

Note. Remarks: All of samples in this section are based on first section: Send email in a simple VB.NET project.To compile and run the following example codes successfully, please click here to learn how to create the test project and add reference of EASendMail to your project.

The Office 365 Exchange Server can be configured to allow SMTP Relay for specific IP addresses. This eliminates the need for a specific user name and password login. For a fixed location like an office or web site, a specific IP address or set of IP addresses can be allowed to use the SMTP server. Once configured, you can send emails on behalf of all the email addresses in your account without.

Outlook.com is a free personal email service from Microsoft that doesn't scan your email for the purpose of serving you ads. Automatically file emails and share photos easily.

Expand your Outlook. We've developed a suite of premium Outlook features for people with advanced email and calendar needs. A Microsoft 365 subscription offers an ad-free interface, custom domains, enhanced security options, the full desktop version of Office, and 1 TB of cloud storage.

Using a PIN or smartcard is faster and more secure than using a password.

Collaborate for free with online versions of Microsoft Word, PowerPoint, Excel, and OneNote. Save documents, spreadsheets, and presentations online, in OneDrive. Share them with others and work together at the same time.