SMTP Server Pro 5.263 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. SMTP Server Pro is suitable for 32-bit versions of Windows XP/Vista/7/8/10/11.
The program is included in Communication Tools. The most frequent installation filename for the software is: SMTPServerGUI.exe. We recommend checking the downloaded files with any free antivirus. The actual developer of the program is IM-Soft. The most popular versions among the software users are 5.8, 5.6 and 5.5.
From the developer:
This is a powerful easy-to-use SMTP POP3 mail server program designed for satisfying the requirements of huge organization in high-volume messaging. It is simple, light-weight and reliable; it has security features to prevent DDoS attacks and block SPAM. It can be installed on several computers in different custom forms what lets you keep the common message queue.
You may want to check out more software, such as Personal Mail Server Pro, Free SMTP Server or 1st SMTP Server, which might be similar to SMTP Server Pro.