Definition: Simple Mail Transfer Protocol, or SMTP, is used to send email. The SMTP protocol provides a common language for different servers to send and receive email messages. The default TCP/IP port for the SMTP protocol is port 25.
Also Known As: Simple Mail Transfer Protocol
Editor-in-Chief at TechSpective
I have a passion for technology and gadgets--with a focus on Microsoft and security--and a desire to help others understand how technology can affect or improve their lives. I also love spending time with my wife, 7 kids, 4 dogs, 7 cats, a pot-bellied pig, and sulcata tortoise, and I like to think I enjoy reading and golf even though I never find time for either. You can contact me directly at tony@xpective.net. For more from me, you can follow me on Threads, Facebook, Instagram and LinkedIn.
Latest posts by Tony Bradley (see all)
- Rethinking Cybersecurity in the Age of AI and Digital Twins - August 25, 2025
- 10 Clever Tech Gadgets Every Student Will Actually Use - August 21, 2025
- The Evolving Face of Ransomware — and How We Can Stay Ahead of It - August 15, 2025
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