Best ReliefJet Essentials for Outlook Alternatives & Competitors in 2025

SysTools MBOX Converter tool repair & extract all email attachments from Mbox file & convert into data items of other email client application on Windows Platform.

Download MailsDaddy OST to PST Converter software to retrieve Offline OST file data and export in PST and many various format like-EML, MSG, HTML, RTF, MHTML, MBOX, Office 365 and Live Exchange Server.

freemium $49.0 / One-off (Only for 2 machines)

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

EML to PST Converter is an ultimate email conversion and migration tool.

Softaken OST to PST Converter to repair, recover and convert OST file to PST

freemium $29.0 / One-off

vMail OST to PST Converter Software is an easy to use tool to convert Exchange OST file to Outlook PST file as well as EML, EMLX, MSG, MBOX, vCard & vCal formats. This software can also recover mailboxes from corrupt, damaged and encrypted OST file.

$29.0 / Annually

Try Thunderbird Converter to export from Thunderbird to Outlook PST, MSG, EML PDF, HTML, EMLX, RTF, MBX & MBOX. Thunderbird Converter can Migrate MBOX files from Thunderbird into MS Outlook, Outlook express, Windows Live mail, Mac Mail.

Free and easy way to import messages from EML format files to the specified Outlook folder.

Free and easy way to move, remove or delete duplicate messages in Outlook folders.

The Mail Passport Pro has been professionally developed for a special purpose, which is to convert Apple Mac Mail, Microsoft Entourage Archive 2004/2008, Mozilla Thunderbird, RGE files, MBOX files, EML files to Outlook for Windows PST format.

Looking for email migration service? Cloud Email Conversion easily turns the bunch of email files into the Outlook PST file preserving the folders structure

Imports Outlook autocomplete list cache from NK2 or XML file to the specified Outlook 2010-2019/365 mailbox or data file.

Kernel for Outlook Duplicates software to detect and remove duplicate email items form Outlook mailboxes.

OST Recovery software recover damaged OST files & restore OST messages from Outlook 2019, 2016, 2013, 2010, 2007, 2003. NST & OST Fix tool also recovers corrupt, orphaned or encrypted OST file emails created by Exchange Server or IMAP profiles.