Dear Team, I hope this message finds you well. I am experiencing a significant slowdown in email synchronization in Thunderbird. Emails take a noticeably long time to appear after clicking, and the overall syncing process is extremely slow across all folders. The problem began on Friday, December 6th, following my use of the "Repair" button on the Inbox (8.9GB) and Sent (10.7GB) folders. After initiating the repair for the Sent folder, synchronization across all folders (Inbox, Sent, Spam, etc.) slowed down considerably. Already done: Checked "All Mail" on Google IMAP: The folder does not appear in IMAP. Troubleshoot Mode: Attempted, but it did not resolve the issue. Reinstalled Thunderbird: Uninstalled and reinstalled Thunderbird on my Mac, but the problem persists. The issue seems isolated to Thunderbird and does not impact my Mac’s overall performance, memory usage, or speed. The synchronization delay affects only Thunderbird, while other applications function normally. I would greatly appreciate your guidance on how to resolve this issue and restore normal synchronization performance. Thank you in advance for your support!