Configure SMTP e-mail in IIS when you want to deliver e-mail messages from your site. Created by Microsoft Available in Windows and Windows Server via the optional IIS role.Configure SMTP e-mail in IIS when you want to deliver e-mail messages from your site. Mail can be delivered immediately or it can be delivered to a file location on disk where it can be retrieved for delivery later. For example, a company can provide an e-mail link for sending feedback messages or for requesting information.
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Microsoft SMTP Server
Alternatives
| # | Image | App Name | Features | Platforms | Price | Website Link |
| 1 | sSMTP | Linux | Free | Website | ||
| 2 |  |
OpenSMTPD | BSD Self-Hosted Linux |
Free | Website | |
| 3 |  |
AtMail Open | Web Discontinued |
Free | Website | |
| 4 |  |
Exim | Linux Mac |
Free | Website | |
| 6 |  |
Postfix | Linux Mac |
Free | Website | |
| 7 |  |
Courier-MTA | Mac BSD Self-Hosted Linux |
Free | Website | |
| 8 |  |
Sendmail | Linux Mac |
Free | Website | |
| 9 |  |
Atmail Email Server | Web | Linux | Commercial | Website |
| 10 | Dragonfly Mail Agent | Linux BSD |
Free | Website |