Self-hosted email archiving platform for ingesting, storing, indexing and searching emails from Gmail, Microsoft 365, IMAP, PST and more.
2.3k stars134 forksAGPL-3.0last commit Actively maintained
4 self-hosted MailStore Server alternatives
MailStore Server is email archiving and eDiscovery software that centrally archives mail from Exchange, Microsoft 365, IMAP/POP and other sources. It provides indexed search, retention policies for compliance, and backup/restore of corporate email.
Alternatives to MailStore Server
Self-hosted email archiving system for syncing IMAP and Microsoft 365 mailboxes, indexing content and attachments, and exporting or restoring mailboxes with auditing and retention.
2.1k stars82 forksGPL-3.0last commit Actively maintained
#3
Self-hosted email archiving server that syncs from IMAP, stores a local compressed archive, and provides fast full-text search via Web UI and REST API.
1.9k stars79 forksAGPL-3.0last commit Actively maintained
#4
Scalable email archiving solution with tamper-evident retention, full-text search, legal hold, deduplication and access controls for compliance.
341 stars50 forkslast commit Actively maintained
What replacing MailStore Server actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 4 of 4 shipped a commit in the last six months. Licences in this list: AGPL-3.0, GPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Backup & Recovery.
