Unverified50% confidenceFactExact time
IMAP and SMTP are both public IETF standards, and nearly all email service providers support them.
1
Sources
50%
Confidence
Long-term
Relevance
10/31/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe email protocol ecosystem is publicly maintained by the IETF (Internet Engineering Task Force) in the form of RFC documents, and any organization or individual may implement and deploy it free of charge.77% similarVerifiedThe IETF is the primary international body responsible for developing Internet technical standards, and the documents it publishes are called RFCs.72% similarVerifiedThe IMAP protocol was proposed in 1986, allowing clients to directly manage emails on the server and supporting multi-device synchronization.71% similarUnverifiedFastmail's core technical team is one of the primary maintainers of the Cyrus IMAP open-source mail server.69% similarUnverifiedIMAP is defined by RFC 3501 (2003) and POP3 by RFC 1939 (1996); IMAP treats the server as the authoritative mail store and synchronizes all operations.69% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1120427API
curl https://kongchang.com/api/v1/knowledge/claims/1120427MCP
get_claim(id=1120427)