1. Install
Install BSD Local IMAP-POP Sync from the official Thunderbird Add-ons listing.
77SOFT / DOCUMENTATION
Basic setup and troubleshooting guidance for Thunderbird users.
Install BSD Local IMAP-POP Sync from the official Thunderbird Add-ons listing.
Select a local POP3 destination account and an IMAP source account.
Check that Sent and Spam/Junk source and destination folders are resolved correctly.
The recommended first-run setting skips existing mail before copying new eligible messages.
Confirm Status OK and review the copied counters. Duplicate checks use local records and Message-ID where available.
One-way folder copying; no mirrored deletions. Do not include passwords, customer data or private message contents. Your browser preview cannot send mail; production requires a tested PHP mail handler.