Email Compliance Software for Microsoft 365

Make it easy for employees to follow your email retention policy — every time

harmon.ie is an Outlook add-in that files emails from personal inboxes into SharePoint and Teams — where your retention policies, governance controls, and Microsoft Purview rules already apply. Metadata is captured automatically at save. No manual tagging, no separate compliance infrastructure.

Email retention solution

Email retention policies fail at the point of enforcement

Most organizations have an email retention policy. The problem isn’t the policy — it’s that enforcing it depends on individual employees doing the right thing, consistently, across every mailbox in the organization.

 

They don’t. And the consequences are real:
The gap isn’t technology — Microsoft 365 has the infrastructure. The gap is getting emails out of inboxes and into governed, structured storage where compliance policies can actually work.

harmon.ie makes compliance something people actually do

harmon.ie adds a sidebar to Outlook that lets users save emails to SharePoint or Teams in a single drag-and-drop. When they save, harmon.ie automatically writes the email headers — To, From, Subject, Date — into SharePoint metadata columns, creating a structured, searchable record without any manual input.

 

Those emails now live in Microsoft 365 locations where your retention labels, sensitivity labels, DLP policies, and Purview governance controls apply automatically. There’s no separate compliance layer to configure. You’re enforcing your retention policy through the infrastructure you already have.

How harmon.ie enforces email retention

File emails directly to governed SharePoint and Teams locations

Move emails out of personal inboxes and into the Microsoft 365 locations your retention policies govern — in one action from Outlook.
Emails saved to SharePoint or Teams are immediately subject to any Purview retention labels, sensitivity labels, and DLP policies configured for that location.
Save Outlook emails to SharePoint or Teams
Tag metadata

Automatic metadata and email tagging

Every saved email becomes a structured, traceable compliance record — automatically.

Automate filing to eliminate human error

The most reliable compliance control is one that doesn’t depend on human decision-making.
Save Outlook emails to SharePoint or Teams
Search across Microsoft 365

Search retained records across Microsoft 365

Find any retained email across all SharePoint sites, Teams channels, and OneDrive folders from a single search in Outlook.

Centrally deploy and manage compliance settings

IT configures harmon.ie once and rolls it out across the organization — compliance settings are consistent across every user.

harmon.ie complements your Microsoft Purview governance framework

harmon.ie doesn’t replace Microsoft 365 compliance tools — it feeds them.

Why compliance teams choose harmon.ie for Microsoft 365 email retention

Adoption is the #1 compliance failure — harmon.ie solves it

A retention policy is only as good as its adoption rate. harmon.ie runs inside Outlook — the application your employees use all day — and reduces saving an email to a drag-and-drop. Organizations that make compliance easy see it happen.
 
harmon.ie enables our employees to do information management without knowing they are doing information management.” — Alexandre Singh, Executive Director, ESDC

Defensible, structured records — not just stored emails

Emails saved through harmon.ie aren’t just archived — they’re structured. Metadata is captured automatically, records are searchable by field, and the Email view provides an auditable grid. When regulators or legal counsel ask for specific records, the answer is a filter, not a search party.

Your Microsoft 365 governance policies apply from day one

harmon.ie doesn’t require a separate compliance infrastructure. When an email lands in a governed SharePoint library, Purview retention labels, sensitivity labels, and DLP policies already configured for that location apply automatically. No additional setup.

Trusted in regulated industries at enterprise scale

ESDC (Employment and Social Development Canada) uses harmon.ie to manage email compliance for 32,000 government employees.
 
Bosch enforces email governance across 360,000 users in manufacturing. Financial services, legal, and construction organizations across the US and Europe rely on harmon.ie for defensible email retention.

ISO 27001 certified — zero data access

harmon.ie never touches your content. Emails move directly from Outlook to your Microsoft 365 tenant. There is no harmon.ie server, no external storage, no data transmission outside your environment. ISO 27001 certified.
 

Covers every version of Outlook during migration

New harmon.ie supports Outlook for Windows (new and classic), Mac, and Web. harmon.ie Classic supports Outlook for Windows (classic) with SharePoint on-premises. Organizations mid-migration to the new Outlook maintain consistent compliance behavior throughout.

Email Retention & Compliance — FAQ

Email compliance software helps organizations enforce email retention policies — ensuring regulated correspondence is saved to governed storage, metadata is captured for eDiscovery, and records are retained and deleted according to legal requirements. harmon.ie does this by moving emails from Outlook into SharePoint and Teams with automatic metadata, putting them under Microsoft 365’s governance and Purview retention framework.
These regulations require organizations to retain specific business correspondence for defined periods and produce it on demand during audits or investigations. harmon.ie ensures those emails leave personal inboxes and are saved to governed SharePoint or Teams locations — with metadata that makes them findable and a structure that makes them auditable. The actual retention labels and deletion schedules are configured in Microsoft Purview; harmon.ie is the mechanism that gets emails there.
Yes. Emails saved through harmon.ie to SharePoint or Teams libraries inherit whatever Purview retention labels, sensitivity labels, and DLP policies are configured for that location. harmon.ie handles the user-level filing step — moving emails out of inboxes into the right governed location with the right metadata. Purview handles the enforcement from there.
Indirectly, yes. Emails saved to SharePoint through harmon.ie are included in Microsoft 365 Content Search and eDiscovery, which legal and compliance teams use to respond to legal holds and discovery requests. Emails that remain in personal mailboxes are harder to locate and produce. By getting emails into SharePoint consistently, harmon.ie ensures the records are where eDiscovery tools can reach them.
ompliance and eDiscovery require finding specific records fast — by sender, recipient, date, subject, or project. If emails are stored without metadata, the only way to find them is to open files one by one. harmon.ie writes email headers into SharePoint columns automatically at save, creating a structured record that’s sortable and filterable without any manual effort.
This is the core problem harmon.ie solves. By making filing as simple as a drag-and-drop from within Outlook — the application employees already use — harmon.ie removes the friction that causes manual compliance systems to break down. For high-compliance mailboxes, drop folders in harmon.ie Classic can automate filing entirely via Outlook rules, removing the human step altogether. We are also working on automatic email thread saving and AI-based filing that will further reduce reliance on manual action.
Archiving is a storage method — moving old emails to compressed storage to reduce mailbox size. Retention is a governance policy — defining which emails must be kept, for how long, and where. The two are often confused but serve different purposes. harmon.ie is a retention tool: it structures where emails are stored and ensures metadata is captured. It’s not an archive in the traditional sense.
Yes. harmon.ie Classic supports SharePoint on-premises as well as SharePoint Online. Organizations running a hybrid or fully on-premises environment can use harmon.ie Classic to file emails to on-premises SharePoint libraries with the same automatic metadata behavior.
harmon.ie is deployed via Microsoft 365 admin center or Microsoft Intune. IT can centrally configure app options — email header mapping, naming formats for saved emails, and required metadata fields — so compliance settings are consistent across every user without individual setup.
harmon.ie is priced at up to $72 per user per year, with discounts available for volume, non-profits, and other cases. Both New harmon.ie and harmon.ie Classic are included. A 21-day free trial is available with no credit card required. Contact us for a quote.

Helpful resources

Email retention guide

Email Retention Policy — Complete Guide

What is an email retention policy, what the law requires,...

Email Management in Microsoft 365

Learn how to save, organize, and find Outlook emails in...

Email Compliance and Document Management for Financial Services

Streamline document and email management in finance and insurance with...

Government Email & Records Management for Microsoft 365

Streamline government operations with harmon.ie. Manage Microsoft 365 files and...

Get Started Today!

See how harmon.ie simplifies document and email management – all from Outlook
Email Management that Works
Want to Learn More?

Let us show you how harmon.ie streamlines email management from Outlook into Microsoft 365.