Mailcow Sync Manager

Synchronize emails from an external IMAP mailbox to a Mailcow mailbox using the official API.

External IMAP Source

IMAP Host * The IMAP server hostname or IP address

IMAP Port *

Encryption *

External Email Address *

External Mailbox Password *

Use app passwords for providers like Gmail

Mailcow Destination

Destination Mailbox * This is the 'username' parameter in the API

Subfolder Name Folder to store synced emails (subfolder2 parameter)

Sync Interval (minutes) *

Exclude Folders (Regex) Regular expression to exclude folders

Maximum Message Age (days) 0 = ignore age, sync all messages

Max Bytes Per Second 0 = unlimited bandwidth

Timeout Settings (seconds)

Remote timeout

Local timeout

Custom Parameters Advanced: Custom parameters passed to imapsync

Sync Options

Delete duplicates on destination (delete2duplicates)

Delete from source after import (delete1) ⚠️ Use with caution! This will delete emails from the source mailbox.

Skip cross-folder duplicates (skipcrossduplicates) Skip duplicate messages across folders

ID	External Source	Destination	Interval	Status	Last Run
1	oldmail@gmail.com imap.gmail.com:993 (SSL)	admin@example.com → External	20 min	Active	2025-06-17 14:30
2	archive@yahoo.com imap.mail.yahoo.com:993 (SSL)	user@example.com → Archive	60 min	Inactive	2025-06-16 09:15
3	migrate@outlook.com outlook.office365.com:993 (SSL)	support@company.org → Migration	30 min	Active	2025-06-17 15:00

Total Jobs

Active Jobs

Inactive Jobs

Avg Interval (min)

Advanced Options