imapsync - Console-based utility for migrating IMAP mailboxes.
SysTools Split PST - SysTools Split PST software easily divide large PST file into smaller parts. PST file splitter can truncate Outlook archive file by folder, year, date & size. Download free to split large Outlook PST files with PST break tool.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
Stellar Phoenix PST File Splitter - Stellar Phoenix PST File Splitter splits large Outlook PST file into smaller PST files, based on...
audriga Email and Groupware migration - Easily migrate your email, contacts, calendar items and tasks to your new provider or server. No software installation is required.
SysTools PST Merge - PST Merge Tool precisely join or merge multiple PST files in Outlook 2019, 2016, 2013, 2010