Fix BitTitan Migration Dates in Google Workspace
Why BitTitan Migrations Show the Wrong Date in Google Workspace
When BitTitan MigrationWiz migrates mailboxes into Google Workspace, each email is uploaded to Gmail's servers through the Gmail API or IMAP. During this process, Google's mail infrastructure records the upload timestamp as the message's INTERNALDATE. BitTitan also introduces a Received header that reflects the migration date, pushing it to the top of the header chain.
Google Workspace handles date display in a unique way compared to other platforms. The Gmail web interface typically references the "Date" header from the original email, which means messages may appear with the correct date when viewed through the Gmail web client. However, the IMAP INTERNALDATE remains set to the migration date. Any IMAP client connecting to that Google Workspace mailbox (Outlook, Thunderbird, Apple Mail) will display the migration date instead of the original date.
This creates a confusing split: the same email looks correct in Gmail on the web but shows the wrong date in Outlook or Apple Mail connected to the same account. IT administrators receive conflicting reports from users, making the problem harder to diagnose. Organizations that migrated to Google Workspace using BitTitan and have users accessing mail through both the web interface and desktop clients face this dual-date confusion across their entire user base.
How This Affects Google Workspace
In Google Workspace, the primary impact hits users who access their mailbox through IMAP clients rather than the Gmail web interface. Outlook, Apple Mail, and Thunderbird connected via IMAP to Google Workspace all display the migration date because they read the IMAP INTERNALDATE. Gmail's web client masks the problem by using the Date header, but the underlying data is still corrupted.
Google Workspace's admin tools and Vault (the compliance and archiving solution) also reference the INTERNALDATE for retention and hold policies. Organizations subject to regulatory requirements that rely on Google Vault for email archival and legal discovery find that date-based searches return inaccurate results. The migration date replaces the original timeline of communications, undermining the integrity of compliance workflows that depend on accurate message timestamps.
Frequently Asked Questions
Why do emails look correct in Gmail but wrong in Outlook after BitTitan migration?
Gmail web client uses the Date header from the original email for display, which is unaffected by migration. However, Outlook reads the IMAP INTERNALDATE, which gets overwritten during migration. This is why the same email shows different dates depending on which client is used.
Does Redate.io work with Google Workspace admin accounts?
Yes. Redate.io connects to Google Workspace through domain-wide delegation using a Service Account. This allows administrators to fix dates across all user mailboxes in the organization without requiring individual user credentials.
Will fixing the INTERNALDATE affect how emails appear in Gmail web?
No. Gmail web already displays the correct Date header. Redate.io corrects the INTERNALDATE and Received headers so that IMAP clients (Outlook, Apple Mail) also display the original date. The Gmail web experience remains unchanged.