5 Best Tools for Win Mail Backup (2026) Securing your local desktop email data is critical to preventing accidental data loss due to software transitions, ransomware, or unexpected system crashes. With Microsoft phasing out the legacy Windows Mail app in favor of the cloud-first New Outlook for Windows, relying on a robust, standalone utility is essential. The New Outlook application currently lacks built-in local .pst backup support, making third-party tools the most reliable mechanism for capturing offline copies of your mailboxes.
The following evaluation details the five best Windows email backup utilities available in 2026 based on their efficiency, data formats, and ease of use. Best Windows Email Backup Tools At a Glance Software Tool Supported Export Formats Key Feature Mail Backup X Comprehensive All-in-One Utility PST, MBOX, EML, PDF Inbuilt incremental tracking Shoviv Email Backup Corporate & Enterprise IMAP PST, MBOX, EML, MSG Advanced granular item filtering Aryson Office 365 Backup Microsoft 365 Ecosystem Users PST, PDF, MBOX, EMLX Direct migration to local storage eSoftTools IMAP Backup Cross-Platform Server Migration PST, EML, MSG, MBOX Native multi-server connectivity Iperius Backup Full System & Mailbox Strategy Compressed Native Formats One-time perpetual license cost 1. Mail Backup X Gmail Backup Software to Make Backup of Gmail Email