The short answer
First, identify which client and case the email belongs to. Then save the message and any important attachments to that case’s SharePoint folder.
You can do this manually in Outlook or automate parts of the process with Microsoft 365. When a client has more than one case, check the case number and email history before choosing a folder.
If you’re not sure which case is correct, don’t guess.
On this page
Why saving an email to the right case matters
Imagine you’re a legal assistant at a small criminal-defense firm.
A client sends an email with a document attached: “Hi, here’s the document you asked for.”
You download the attachment and save it to SharePoint. Done, right?
Not necessarily.
- What if the client has two active cases?
- What if the email is from a prosecutor rather than the client?
- What if the document was saved correctly, but nobody noticed that the email also asked an important question?
Saving a file is only one part of handling an email. A good filing process should answer four questions:
- Who is this email about?
- Which case does it belong to?
- What should be saved?
- Does anyone still need to do something?
The goal is simple: Anyone working on the case should be able to find the right information without searching through someone’s personal inbox.
How to save an Outlook email to SharePoint by hand
Identify the correct client and case
Before moving anything into SharePoint, check which case the message belongs to.
Start with the strongest clue: a case number. For example:
If the number matches a case in your firm’s records, and the message is genuinely connected to that case, you have strong evidence about where it belongs.
If there’s no case number, look at the existing email conversation, the client, and other case details.
Suppose Maya Collins has two matters:
- State v. Collins — Criminal Defense, CR-2026-1042
- Collins Record-Sealing Matter, RS-2026-0081
Maya writes: “Here are the documents you requested.” That message doesn’t tell you which case should receive the files.
Don’t automatically choose the most recently opened case or the first folder with Maya’s name. Check the conversation. If it still isn’t clear, ask someone to confirm.
Knowing the sender isn’t the same as knowing the case.
This is especially important for court notifications, opposing counsel, and other people who may be involved in several matters.
Save the Outlook email
You can save an Outlook email as a file and place it in SharePoint. The exact steps vary slightly between new Outlook, classic Outlook, and Outlook on the web.
- Outlook email
- Save message and attachment
- Open the correct case folder
- Upload files
- Confirm location and access
In new Outlook for Windows
- Open the message you want to save.
- Select the three-dot More actions menu.
- Choose Save as.
- Save the message to an available file or cloud location.
- If needed, upload the saved message to the correct SharePoint document library and case folder.
Outlook can save email messages in formats such as .eml, depending on the version and save method. An .eml file is a saved email that can preserve message information such as the sender, subject, content, and other email details.
In Outlook on the web
Open the message, select More actions, and choose Download. The downloaded message can then be uploaded to SharePoint.
Upload the message to SharePoint
- Open your firm’s SharePoint site.
- Open the document library containing case files.
- Find the correct client’s case folder.
- Open the folder where your firm keeps correspondence.
- Select Upload → Files, or use supported drag-and-drop.
- Select the saved email file.
- Confirm it appears in the correct location.
A simple example might look like this:
Important: Moving an email into another Outlook folder is not the same as saving a copy into a SharePoint document library. An Outlook folder organizes mail. A SharePoint case folder stores files that the appropriate members of your team can access.
Save the attachments too
Saving the email itself and saving its attachments are two different things.
Suppose Maya sends: “Attached is the document you requested.” The message contains DiscoveryResponse.pdf. If your firm’s process requires both the correspondence and the document, make sure both are saved.
A simple manual process is:
- Open the attachment in Outlook.
- Download it or save it to an appropriate available location.
- Open the correct SharePoint case folder.
- Upload the attachment.
- Confirm the file opens and belongs to the correct case.
Use clear filenames.
2026-10-14 — Maya Collins — Discovery documents.emlDiscoveryResponse.pdfDocument.pdfDocument-final2.pdfNewFile(3).pdfDon’t rename court or legal documents in ways that change their meaning. Follow the firm’s document-naming and record-retention policies.
And don’t assume that uploading a file means the related request has been completed. If the email asks for a reply or action, someone still needs to handle it.
Use Power Automate for predictable filing
If your firm regularly receives similar emails, Microsoft Power Automate can save some of the manual work. For example, you might receive notifications from a known court system.
A basic automation could:
- Watch for a new Outlook email.
- Check whether it matches a known sender or subject pattern.
- Identify the correct SharePoint destination using a configured rule.
- Save the relevant attachment using SharePoint’s Create file action.
- Send the message for review when the destination isn’t clear.
Power Automate provides an Outlook trigger called When a new email arrives (V3), along with SharePoint actions such as Create file. A flow can also retrieve attachments and save them in a SharePoint library.
But there’s an important catch.
Recognizing an email is not the same as recognizing which case it belongs to.
A rule that says “Save all messages from this court address” still needs a reliable way to determine which case folder should receive each message. That could involve an exact case-number lookup or another trusted mapping.
If your automation cannot identify the case safely, it should ask for help rather than filing the document into a guessed folder.
Power Automate is useful for repeatable rules. More complicated legal email handling requires more careful setup and testing.
What if one client has two cases?
This is one of the easiest ways for an email to end up in the wrong folder. Imagine Maya Collins has these two cases:
Now consider three emails.
Email A: The case number is included
“Please see the attached discovery response for CR-2026-1042.” The number identifies Case A. After checking the match against the firm’s case information, the email and document can be saved with Case A.
Email B: The email continues an existing conversation
“Re: Record-sealing forms — I’ve attached the signed copy.” If the conversation was already confirmed as belonging to Case B, that earlier association provides strong evidence. The email and attachment belong with Case B.
Email C: There isn’t enough information
“Here are those documents we discussed.” This is a new conversation, and both cases are possible. The correct response is to confirm which case the documents belong to.
A reliable filing system needs to know when it doesn’t know.
That is safer than quietly putting a confidential document in the wrong matter.
Try it: Which case should this email go into?
One client. Two cases. Three emails. Can you choose the right place?
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The three emails and where they go
- Exact case number → Case A
- The email includes the case number CR-2026-1042, which matches State v. Collins. This is strong evidence for filing the message and attachment with Case A.
- Confirmed conversation → Case B
- Even without repeating the matter number in this message, the existing conversation is already linked to Case B. That confirmed history identifies where the new message belongs.
- Unclear new conversation → Ask someone to confirm
- Both cases are possible. The sender’s name alone doesn’t identify the correct case. The safer choice is to confirm the matter before filing the documents under a specific case.
The right folder depends on the evidence in the email and its history, not just the sender’s name.
All names, case numbers, and documents are fictional.
How Trovve saves Outlook emails to the right case
Trovve works with Microsoft 365 to help law firms organize incoming communication without rebuilding their inbox or replacing an existing practice-management system. Instead of asking someone to save every email manually, Trovve’s email automation follows a case-aware process.
Understand who the email is about
The sender might be a client, a court system, opposing counsel, or someone acting on a client’s behalf. Trovve identifies the relevant people and client relationships before applying the firm’s configured email rules.
Find the correct case
Trovve checks strong evidence first, including:
- Case or matter number
- Existing conversation association
- Primary client
- People connected to the case
- Other structured case information
When the evidence clearly identifies a case, Trovve can match it automatically. When several cases remain plausible, Trovve suggests a match and asks for confirmation. It doesn’t need to invent a case or guess which one should receive the email.
File the message and attachments
Trovve saves the relevant email and attachments to the configured SharePoint location. When a case is matched, the files can be saved under that case’s existing SharePoint folder. Within that location, Trovve can keep messages from the same email conversation together in an Emails folder.
Email copies are stored as
.emlfiles when email saving is enabled, while attachments retain their original file formats. This helps your team find the correspondence and its documents together.Handle uncertain case matches safely
If Trovve identifies the client but cannot confidently identify the case, it doesn’t have to file the message under a guessed case. The email conversation and its files can be kept in the client’s SharePoint location until the correct case is confirmed.
Once confirmed, Trovve moves the conversation’s folder to the right case and updates the associated links. This preserves the information while avoiding an incorrect case assignment.
Keep track of any unfinished work
Not every email needs a task. A client might send a signed document that only needs saving. Another email might request a reply or require a court filing to be reviewed.
Trovve determines the appropriate handling according to the firm’s rules and the meaning of the message. When work is needed, the appropriate person can receive a task or follow-up. When no new work is needed, the information can simply be recorded or filed.
Saving the email and completing the work are two separate decisions. Trovve helps connect them.
Common mistakes to avoid
Saving everything under the client’s name
One client can have several cases. Use the correct case or matter identifier whenever possible.
Saving the attachment but losing the email
The document may be useful, but the message can explain why it was sent. Keep the correspondence when the firm’s policies require it.
Letting an automation guess the destination
An automatic filing mistake can be harder to notice than a file waiting for review. Use clear matching rules and a review path when the case is uncertain.
Creating multiple copies without a plan
Filing the same thread repeatedly can produce confusing duplicates. Choose a consistent approach to email conversations, filenames, and duplicate handling.
Giving too many people access
SharePoint permissions matter. Files can inherit access settings from the site, library, or parent folder. Review who can see confidential case materials. Do not assume that creating a case folder automatically restricts access to that case’s team.
A simple checklist for your firm
Before saving an important email, ask:
- Do I know the client?
- Do I know the correct case?
- Am I saving the email, its attachments, or both?
- Can the right people access the files?
- Does someone still need to act?
If the case isn’t clear, get confirmation first.
A good filing system helps your team find information. A better one also helps make sure the information ends up with the right case—and the right work gets done.