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Open Archiver: Open-source email archiving tool with full-text search

Hey indie hackers,

I’d like to share an open-source email archiving tool I’ve created.

So the backstory is that I run a small software company and all our contracts, financial documents, and client communications are stored in Google Workspace emails. One day, it struck me that what if we lost access to our Google Workspace due to some vendor abnormalities (which is not rare).

So I built this open-source tool that helps individuals and organizations to archive their whole email inboxes with the ability to search. I think this might be of interest to the DataHoarder sub, so I will share it here.

The tool is called Open Archiver, and it is able to archive and index emails from cloud-based email inboxes, including Google Workspace, Microsoft 365, and all IMAP-enabled email inboxes. You can connect it to your email provider, and it copies every single incoming and outgoing email into a secure archive that you control (Your local storage or S3-compatible storage).

The tool is called Open Archiver, and it has the ability to archive emails from cloud-based email inboxes, including Google Workspace, Microsoft 365, and all IMAP-enabled email inboxes. You can connect it to your email provider, and it copies every single incoming and outgoing email into a secure archive that you control (Your local storage or S3-compatible storage).

Some features:

  • Archive and index all emails and attachments

  • Back up the whole organization's emails: For Google Workspace and MS 365, Open Archiver can import and sync all individual inboxes' emails

  • PST and .eml files import

  • Role-based access

  • Full-text search: All archived emails and attachments are indexed, so you can search all emails and attachments from Open Archiver's web UI

  • You can choose to store your files either on your local machine or on any S3-compatible storage provider

  • API access

It's open-source and free to use for personal and business purposes. I'd be happy if you could give it a try and give me some feedback.

You can find the project on GitHub (Demo site available): https://github.com/LogicLabs-OU/OpenArchiver

on August 9, 2025
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