Perbaiki Tanggal Salinan IMAP Manual di Gmail

Manual IMAP copy to Gmail involves adding both a source IMAP account and the Gmail account to an klien email (Outlook, Thunderbird, or Apple Mail) and copying messages between them. When the klien email uploads messages to Gmail via IMAP APPEND, Gmail records the stempel waktu unggah as the message's INTERNALDATE. The klien email does not pass the original INTERNALDATE from server sumber karena 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 header Received that contains the Gmail IMAP gateway timestamp. This header Received becomes the topmost entry in the rantai header. While Gmail's antarmuka web uses the header Date for display (potentially showing tanggal yang benars), every klien IMAP that subsequently terhubung ke 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 klien email masks the underlying kerusakan tanggal that occurs at the IMAP protocol level. The problem becomes apparent when the pengguna checks their Gmail account from a different client or when an IMAP-connected alat cadangan archives the tanggal yang salahs.

In Gmail, the impact follows the familiar split: the antarmuka web may show tanggal yang benars (from the header Date) while klien IMAPs 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 terhubung ke 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 penyortiran within labels uses the INTERNALDATE when accessed via IMAP. klien IMAPs that sort by server tampilan tanggal the copied messages out of their original chronological order. Google Takeout exports and third-party alat cadangans record the copy date as the message date, creating permanent inaccuracies in exported archives. For pengguna who manually consolidated years of email from multiple accounts into Gmail, the kerusakan tanggal can affect a significant portion of their entire email history.