SMTP
The TCP/IP protocol SMTP (Simple Mail Transfer Protocol) is used to transmit and receive e-mail. Due to its limited capacity to queue messages at the receiving end, it is frequently combined with one of two other protocols, POP3 (Post Office Protocol) or IMAP (Internet Message Access Protocol), which allow the user to save messages in a server mailbox and download them periodically. In other words, users often utilise a programme that sends e-mail over SMTP and receives e-mail via POP3 or IMAP. SMTP can transmit and receive mail, but it is inefficient in queuing incoming messages, which is why it is frequently delegated to other protocols.
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Rajat Gupta is the founder of Spotsaas, where he reviews and compares software tools that help businesses work smarter. Over the past two years, he has analyzed thousands of products across CRM, HR, AI, and finance — combining real-world research with a strong foundation in commerce and the CFA program. He's especially curious about AI, automation, and the future of work tech. Outside of SpotSaaS, you'll find him on a badminton court or tracking the stock market.
Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
