Unverified50% confidenceFactExact time
Under the RFC 5321 email standard, the local-part of a mailbox address is theoretically case-sensitive and every character is significant, including dots.
1
Sources
50%
Confidence
Long-term
Relevance
8/19/2026
First Seen
Sources
Gmail点号忽略机制为何导致邮件误送给同名用户
Related Claims
UnverifiedRFC 5321是IETF制定的SMTP标准，规定邮箱地址local-part的解释权归属于接收方邮件服务器69% similarUnverified邮箱别名地址是长期有效且与真实用户强绑定的，而临时邮箱是无主的、短暂的公共地址，两者本质不同60% similarUnverified电子邮件已有重要标记、星标、优先收件箱等机制，而即时通讯在信息分层管理上更加扁平59% similarUnverifiedMailoz v1.0.8 optimized the underlying logic for mailbox retrieval, improving the success rate of both email address generation and email reception.58% similarUnverifiedCompared to temporary email services, unlimited email solutions implemented via custom domains will not be flagged by platforms as temporary mailboxes.57% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/773348API
curl https://kongchang.com/api/v1/knowledge/claims/773348MCP
get_claim(id=773348)