imapsync/imapsync

Features

• Bulk Account Migrations - Transfers bulk email accounts between different hosting providers using administrative or user credentials.
• Cross-Server Email Migration - Copies or synchronizes email messages and folder structures from one IMAP server to another.
• Bulk Mailbox Synchronizers - Automates the transfer of large volumes of email accounts between providers using lists and administrative credentials.
• Server-to-Server Synchronizations - Downloads messages from a source server and uploads them to a destination server via standard IMAP protocols.
• Message Deduplication - Prevents duplicate emails between servers by matching unique message identifiers or specific headers.
• Data Synchronization Filters - Provides a selection mechanism for synchronizing emails based on date ranges, age, size, or search queries.
• IMAP Connection Encryption - Provides encrypted email transfers using IMAPS or STARTTLS.
• Incremental State Tracking - Tracks processed message identifiers to resume interrupted migrations without duplicating data.
• Email Content Transformations - Applies regular expression patterns to rewrite email headers, bodies, and folder names during transfer.
• IMAP Data Migrations - Moves email data between servers while preserving folder hierarchies and message metadata.
• Mailbox State Synchronizers - Copies and synchronizes email messages and folder structures to mirror state between two IMAP servers.
• Email Data Sanitizers - Cleans and transforms email headers and folder names to ensure compatibility between different mail servers.
• Header-Based Message Comparison - Matches emails between servers using specific headers to determine synchronization status.
• IMAP Email Migrations - Moves email messages and folder structures from one server to another while preserving metadata.
• Mailbox Folder Mapping - Implements a translation process that maps source folder structures to destination paths during migration.
• IMAP Flag Synchronization - Matches the read, answered, and flagged status of emails between the source and destination servers.
• Resumable Transfers - Supports resuming interrupted migrations and skipping already transferred messages to ensure efficiency.
• Certificate Verification - Validates SSL/TLS certificates to ensure the server hostname matches the target and prevent MITM attacks.
• IMAP Connection Authentications - Connects to mail servers using specific credentials and selectable IMAP authentication mechanisms.
• Synchronization State Tracking - Uses message identifiers to track progress and restart synchronization without duplicating data.
• Mailbox Content Deletion - Provides a utility to remove messages or directories from a mailbox based on selection criteria or age.
• Message Preprocessings - Normalizes header fields and adds missing message IDs to ensure consistency during synchronization.
• Header Injections from Commands - Injects required RFC 5322 headers into messages that lack them to ensure successful transfer between servers.
• Hierarchy Backups - Allows copying an entire account hierarchy into a specific destination subfolder for organization and backup.
• Message Flag Filtering - Enables the selection of specific subsets of emails to sync based on their read or unseen status.
• Temporal - Allows users to limit email migration to messages newer than a specified number of days.
• Unseen Message Synchronization - Optimizes transfers by synchronizing only messages marked as unseen.
• Continuous Synchronization - Maintains two mailboxes in sync through a continuous loop of scheduled synchronization.
• Gmail-Specific Optimizations - Provides a specialized migration mode for Gmail that manages label ordering and transfer limits.
• Global Mailbox Deduplication - Skips messages already existing in the destination regardless of their current folder path.
• Mailbox Size Restrictions - Restricts the maximum size of processed emails to prevent memory exhaustion during transfer.
• Chunked Mailbox Synchronization - Processes large mailboxes in manageable increments by filtering messages based on search criteria.
• Email Duplicate Detection - Determines if messages are identical using specific headers or unique identifiers to avoid duplication.
• Local Caching Layers - Stores message IDs and flags locally to reduce redundant server queries during repeat synchronizations.
• Metadata Caching - Stores message IDs and flags locally to avoid redundant server queries and speed up repeat synchronizations.
• Migration Simulations - Offers a trial execution mode to identify which messages would be moved without modifying server data.
• Email Folder Name Translation - Transforms source folder names into destination names using automated mapping or regex substitutions.
• Internal Date Filtering - Uses the server internal arrival date instead of the header date to apply age restrictions.
• Regex Folder Filtering - Implements regular expression patterns to precisely control which folders are synchronized between servers.
• Mailbox Path Rewriting - Transforms folder names and structures using regular expressions to ensure correct destination directory placement.
• Client-Side Rate Limit Throttling - Implements custom delay logic to adjust synchronization speed and avoid server-side rate limiting rejections.
• Destination Mirror Cleanup - Removes folders from the destination server that no longer exist on the source server.
• Strict Mailbox Mirroring - Ensures the destination mailbox exactly matches the source by removing orphaned messages.
• Domino Notes Integration - Provides specialized synchronization between standard servers and Domino Notes with compatibility adjustments.
• Archiving - Moves messages into date-based folders by month or year to organize long-term storage.
• Email Content Sanitizers - Provides tools to remove invalid headers and non-compliant characters to ensure email server acceptance.
• Email Date Synchronizers - Copies the internal arrival date from the source server to the destination to maintain correct message sorting.
• Email Flag Transformers - Transforms specific email message flags from one value to another using regular expressions.
• Exchange Server Integration - Includes a specialized transfer mode for Exchange servers that manages size limits and formatting requirements.
• IMAP Mailbox Managers - Provides tools for managing mailbox sizes, deleting redundant messages, and auditing content across multiple IMAP accounts.
• Mailbox Account Consolidation - Allows the synchronization of data from several different source email accounts into a single destination account.
• Mailbox Content Filtering - Provides the ability to exclude specific folders or messages from being copied based on name patterns.
• Message Content Modification - Transforms email headers and bodies using regular expressions to correct formatting and ensure consistency.
• Move-Based Email Migrations - Implements a transfer mode that moves emails from a source to a destination and deletes the originals upon delivery.
• Shared Mailbox Synchronization - Connects to and synchronizes shared email accounts using specialized authentication and access configurations.
• Sync Memory Optimizations - Saves memory during large folder synchronizations by using unique identifiers instead of full message headers.
• Multi-Process Parallelism - Increases throughput by running multiple synchronization instances simultaneously for bulk account migrations.
• OAuth2 Email Authentications - Connects to modern email providers using secure authorization tokens and OAuth2 mechanisms.
• Administrative Account Impersonation - Allows access to user mailboxes using a privileged administrator account instead of individual passwords.
• Service Account Authenticators - Implements authentication using access tokens or service account files for user and administrator access.
• OAuth2 Providers - Provides authentication using authorization tokens and application-specific passwords for providers requiring two-step verification.
• Account Impersonation - Uses administrative privileges to access and migrate multiple user mailboxes without requiring individual user passwords.
• Parallel Synchronization Execution - Increases synchronization throughput by running multiple migration processes simultaneously.
• Email Deduplication - Includes a cleanup utility that identifies and deletes redundant copies of the same email within an account.
• Mailbox Size Analysis - Provides a utility to calculate folder sizes and total account volume without transferring data.
• Mailbox State Mirroring - Removes messages from a destination server that are not present on the source to ensure exact mirroring.
• Synchronization Simulations - Provides a simulated synchronization job to verify successful connection and interaction with mail servers.
• Mail Clients - Tool for migrating mailboxes between IMAP servers.

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