Best Regain PST Splitter Alternatives ranked by AI · updated Aug 2026

💡 Pick it for more splitting rules, batch controls, and stronger documentation than Regain.

SysTools Split PST Software divides large Outlook PST files by size, date, year, folder, or email address. It is aimed at Outlook...

💡 Choose it for a more polished interface and stronger vendor support than Regain.

Stellar Splitter for Outlook is a tool that helps in splitting large PST files into smaller, manageable parts.

💡 Pick it when PST splitting is part of a larger repair, recovery, or conversion job.

Kernel for Outlook PST converts or exports Outlook PST mailbox data to formats such as EML, MSG, MBOX, and HTML while also...

💡 Use it for a focused PST splitter with familiar size, date, year, and folder rules.

Cigati PST Splitter breaks large Outlook data files into smaller PSTs by size, date, year, or folder. It targets individual Outlook users...

💡 Choose it for a focused commercial splitter with multiple rules and preserved Outlook folders.

Aryson PST Split divides large Outlook PST files into smaller files using size, date, year, or folder-based criteria. It is designed for...

💡 Pick it for a simpler alternative when you only need occasional PST splitting on Windows.

Advik PST Splitter separates oversized Outlook PST files into smaller files by size, date, year, or folder. It is aimed at home...