Microsoft’s shift to the new Outlook client hasn’t been optional for long. As the classic desktop client gets phased out, organisations that built their records and document management habits around Outlook add-ins have run into the same wall: the new Outlook doesn’t support the old integrations. If your team relied on the M-Files Advanced Outlook Add-in (deprecated at the end of 2024) or the original COM-based M-Files for Outlook (now in maintenance mode, with no new feature development), switching to the new Outlook means those tools stop working the moment you make the change.

That’s left a lot of teams with an uncomfortable choice: stay on an outdated Outlook client to keep saving emails properly or move forward with Microsoft’s roadmap and lose a huge chunk of their information governance in the process. Neither option is good enough for organisations that depend on getting email and attachments into M-Files with the right metadata, permissions, and audit trail.

Built for the Outlook Microsoft Actually Wants You to Use

M-Files for Outlook Pro is the answer to that gap. It’s a modern, web-based add-in that runs natively in the new Outlook desktop client, in classic Outlook, and in Outlook on the web — so there’s no cliff-edge the day your organisation finishes its migration. Rather than bolting on old COM technology that Microsoft no longer wants add-ins built on, M-Files for Outlook Pro uses the same Microsoft 365 and Microsoft Graph foundations that the new Outlook itself is built on, which is exactly why it keeps working as Microsoft continues to evolve the client.

What You Actually Get with Pro

Beyond just “it works in the new Outlook,” M-Files for Outlook Pro brings a genuine step up in how email gets captured and governed:

  • Automatic folder rules. Set a rule on an Outlook folder once, and every email that lands there — today and in the future — gets saved to M-Files automatically with the right class and metadata. No more relying on people to remember.
  • Automatic conversation saving. Turn it on for a thread and every reply, from anyone in the conversation, gets saved automatically for up to six months — without a single extra click.
  • Team-wide visibility. When an email is saved, both the sender and the recipients see the “Saved to M-Files” tag in their own mailbox, so the whole team knows at a glance what’s already been captured, not just the person who hit save.
  • Shared and delegated mailbox support, including folder rules for shared folders when your organisation has the right access configured.
  • Smart alerts that warn a user before they send an email that should probably be saved but hasn’t been, cutting down on the emails that slip through the cracks entirely.
  • Attachment flexibility — save attachments together with the email as a single multi-file document, or break them out as separate objects with their own version control, depending on how your organisation needs to manage them.
  • Built-in duplicate handling, so when two people save the same email, M-Files doesn’t end up with two copies cluttering the vault.

The free M-Files for Outlook Lite tier still covers manual saving with new or recently used metadata, which is a big step up from nothing — but automatic folder rules, conversation saving, and the rest of the vault-level configuration are Pro-only, and that’s usually where the real time savings show up.

The Real Win Isn’t Saving the Email — It’s Finding It Again

Anyone who has spent ten minutes scrolling through a colleague’s mailbox looking for “that email from a few months back” already knows Outlook’s search has limits. It searches within a mailbox or a folder, it leans on keyword matches in the subject and body, and it has no idea that an email relates to a particular customer, matter, project, or contract unless that word happens to appear in the text. Once an email moves between mailboxes, gets forwarded, or sits in someone else’s inbox instead of yours, finding it again often comes down to guesswork.

M-Files works completely differently, because it isn’t searching for text in a mailbox — it’s searching structured, tagged information across the whole vault. The moment M-Files for Outlook Pro saves an email, it’s classified and tagged with the same business metadata as every other document in your organisation: the project it belongs to, the client, the contract, the matter number, whatever properties your vault is built around. From that point on, anyone with the right permissions can find it by searching for the project or customer, not by trying to remember who sent it or what the subject line said — and it comes back alongside every other document already linked to that same project or client, not as an isolated result sitting in someone’s inbox. That’s a genuinely different way of finding information than anything Outlook’s search was ever designed to do, and it’s often the single biggest productivity gain organisations notice after making the switch.

Governance That Doesn’t Depend on Who’s in the “To” Field

One detail worth calling out for anyone in a regulated or compliance-conscious industry: permissions on saved emails come from the M-Files class and workflow you’ve configured, not from the list of people who happened to be on the email. That’s an important distinction — it means access to a saved email is governed by the same rules as every other document in your vault, rather than being left to whoever was cc’d at the time.

The one nuance worth knowing about is automatic conversation saving: because it saves every future reply in a thread, it’s technically possible for a reply containing sensitive information to get saved and become visible more broadly than the original sender intended, in the same way this has always been a consideration with reply-all threads. M-Files’ own guidance is simply to set policy around when conversation saving should and shouldn’t be used — it’s a five-minute conversation with your team, not a reason to avoid the feature.

The Bottom Line

M-Files for Outlook Pro turns Outlook into a genuine front door to your M-Files vault, rather than a parallel system your team has to manage on the side. Email gets captured automatically, tagged with the same business metadata as everything else you hold, and becomes just as easy to find as any other document in the vault — all without asking people to change how they already work in Outlook. It’s built on the same modern Microsoft 365 foundations as the new Outlook itself, so it’s designed to keep working as that platform evolves, not just to get your organisation through the current transition.

If you’d like to see what that looks like for your organisation, Cadmus Consulting can help you plan the rollout and get M-Files for Outlook Pro configured properly from day one.