Gmail에서 수동 IMAP 복사 날짜 수정
수동 IMAP 복사가 Gmail에서 잘못된 날짜를 표시하는 이유
Manual IMAP copy to Gmail involves adding both a source IMAP account and the Gmail account to an 이메일 클라이언트 (Outlook, Thunderbird, or Apple Mail) and copying messages between them. When the 이메일 클라이언트 uploads messages to Gmail via IMAP APPEND, Gmail records the upload timestamp as the message's INTERNALDATE. The 이메일 클라이언트 does not pass the original INTERNALDATE from 소스 서버 because most clients do not support this during copy operations.
Gmail's IMAP handling introduces an additional complication. Gmail processes uploaded messages through its own pipeline, adding a Received 헤더 that contains the Gmail IMAP gateway timestamp. This Received 헤더 becomes the topmost entry in the 헤더 체인. While Gmail's 웹 인터페이스 uses the Date 헤더 for display (potentially showing 올바른 날짜s), every IMAP client that subsequently connects to the Gmail account reads the corrupted INTERNALDATE.
Users who manually copy emails to Gmail often do so when consolidating multiple email accounts or when moving from a less common email provider that is not supported by standard migration tools. The simplicity of drag-and-drop in an 이메일 클라이언트 masks the underlying 날짜 손상 that occurs at the IMAP protocol level. The problem becomes apparent when the 사용자 checks their Gmail account from a different client or when an IMAP-connected 백업 tool archives the 잘못된 날짜s.
Gmail에 미치는 영향
In Gmail, the impact follows the familiar split: the 웹 인터페이스 may show 올바른 날짜s (from the Date 헤더) while IMAP clients show the copy date (from the INTERNALDATE). Users who access Gmail only through the web browser may not notice the issue. Users who use Outlook, Apple Mail, or Thunderbird connected to Gmail via IMAP see the copy date for all manually transferred messages.
Gmail's label system preserves the labels applied during the copy, but the sorting within labels uses the INTERNALDATE when accessed via IMAP. IMAP clients that sort by server date display the copied messages out of their original chronological order. Google Takeout exports and third-party 백업 tools record the copy date as the message date, creating permanent inaccuracies in exported archives. For 사용자 who manually consolidated years of email from multiple accounts into Gmail, the 날짜 손상 can affect a significant portion of their entire email history.
자주 묻는 질문
I used Thunderbird to copy emails to Gmail. Are my dates affected?
예. Thunderbird, like all 이메일 클라이언트s, uses IMAP APPEND without specifying the original INTERNALDATE when copying between accounts. Gmail sets the INTERNALDATE to the upload time. Redate.io can fix these dates 에 관계없이 which client was used for the copy.
Can I fix dates only for manually copied emails, not my entire Gmail?
예. Redate.io scans 사서함 and identifies emails where the INTERNALDATE does not match the Date 헤더. Only affected messages are flagged for fixing. Emails that were natively received by Gmail (with 올바른 날짜s) are left untouched.
Does the fix work if I copied emails from multiple source accounts?
예. Redate.io fixes dates based on the original Date 헤더 of each email, 에 관계없이 where it was copied from. Multiple source accounts consolidated into a single Gmail account can all be fixed in one scan-and-fix operation.