Integrating Microsoft 365 into content approval and publishing workflows has become essential for any organization that wants to work in an agile, secure, and well-coordinated way . Today, virtually everything involves documents, emails, forms, and collaborative tasks, and if these processes aren't automated, significant time is wasted and errors increase.
Thanks to tools like Power Automate, SharePoint, Teams, Outlook, Forms, and Dataverse , it's possible to set up robust approval workflows for documents, vacation requests, invoices, contracts, or web content, with email and Teams notifications, attachments that don't get corrupted, and complete traceability from the first click to final publication.
What is an approval workflow in Microsoft 365?
An approval workflow is a sequence of actions that starts when a specific event occurs (for example, a form is submitted or an item is created in SharePoint) and guides the entire process of reviewing and deciding on that content: request, approval or rejection, notifications, status updates, and, if applicable, publication.
In the Microsoft 365 ecosystem, Power Automate is the engine that orchestrates these workflows . From there, you can connect services like SharePoint, Dynamics 365, Salesforce, OneDrive for business or education, Zendesk, WordPress, and many others, so that business logic doesn't depend on scattered manual actions, but rather on clear and repeatable rules.
These types of workflows allow, for example, a change in a sensitive record not to take effect until the last person in the chain has approved it: if someone modifies a customer's credit limit or the price of a product, the new value is "on hold" within the workflow until approval is completed.
The business logic you can implement ranges from adding and updating master data (customers, suppliers, items, accounting accounts) to creating purchase and sales documents, posting financial journal entries , and creating new users and modifying permissions. All of this is done with a clear record of who approved what and when.
Depending on your needs, you can design sequential or parallel approval workflows . In sequential approval, the request moves from one person to the next only if the previous person has approved it. If someone rejects it, the process stops there. In parallel approval, the request is sent simultaneously to multiple approvers, and the workflow isn't complete until everyone has made a decision.
Power Automate as the backbone of approvals
Power Automate is Microsoft 365's native automation tool that lets you build workflows without writing complex code. With just a few clicks, you can create workflows that react to events in Forms, SharePoint, Outlook, Teams, Dataverse, or third-party applications, and manage the entire approval lifecycle.
The key action for these scenarios is “Approvals – Start and wait for an approval” . Adding it to your workflow automatically generates an approval request that appears in the Power Automate Approvals Center, in the Power Automate mobile app, and can also trigger email and Teams notifications.
With this action you can build very varied flows: invoice approval, work orders, sales quotes , vacation requests, overtime, travel plans or any internal process that needs a formal "yes" or "no" before moving forward.
One of its biggest strengths is that approvers aren't tied to a single interface . They can respond directly from Outlook email (accepting or rejecting directly), from the Approval Center in the Power Automate portal, or from the mobile app when they're out of the office, which greatly speeds up response times.
In addition, Power Automate integrates directly with Microsoft Dataverse , opening the door to more advanced scenarios, such as long-term approvals, structured storage of decisions, and subsequent exploitation of data for reporting or audits.
Complete example: vacation workflow with Forms, SharePoint, Outlook, and Teams
A typical and highly illustrative example of Microsoft 365 integration in approval workflows is vacation management. The idea is simple: an employee fills out a form, that data is saved in SharePoint, an approval request is sent to the responsible party, and, depending on the response, the results are communicated and the request status is updated.
A basic flow can follow this general scheme:
Start the flow with Microsoft Forms or SharePoint
The process begins in two common ways:
- Microsoft Forms formThe employee submits a request with dates, type of absence, comments, etc. The workflow is triggered "When a new response is sent".
- SharePoint Online ListThe trigger is "When an item is created" in a list dedicated to vacation requests.
In the case of Forms, it is very common for the flow to first create an item in a SharePoint list with the form information, so that all requests are centralized in one place and it is easy to filter, audit, or cross-reference them with other data.
SharePoint list structure
To ensure everything runs smoothly, it's advisable to set up a SharePoint Online approval list from the start . For example, for vacation requests, the minimum reasonable number of columns would be:
- Name: single line of text.
- Start date: date and time type.
- Finish date: date and time type.
- Comments: single line text (or several, if you want more detail).
- Approved: Yes/No field that indicates the result.
- Administrator or manager comments: single line text to explain the reason for the decision.
It's important to note the site URL and the exact list name , because you'll need them when setting up the trigger in Power Automate.
Creating the automated cloud workflow
In Power Automate, the standard startup process would be:
- Walk into My flows and choose “New flow > Automated cloud flow".
- Give it an identifiable name, for example, “Vacation Approval – M365”.
- Select “When an item is created” as the trigger in SharePoint (or “When a response is sent” in Forms if you start there).
- Configure the trigger by specifying the Site address and list name corresponding to the created list.
Power Automate offers a new designer and a classic one ; both follow a very similar pattern: you select the trigger card, fill in the parameters, and continue adding actions.
Retrieve the profile of the requesting user
A very useful practice is to add a profile action right after the trigger (for example, "Get user profile" in Microsoft 365). This gives you access to the user's full name, email address, and other data that you can then reuse in the approval request and notifications.
Launch approval with Power Automate
The next step is to include the action “Start and wait for approval” . There you define:
- Approval type (for example, “Approve/Reject – First Responder” if it is enough for the first responder to decide, or models with multiple approvers).
- Approval Title, such as “Vacation Approval Request”.
- Assigned to, indicating the address of the person directly responsible, of a security group or of a specific team.
- Additional details, such as dates, employee comments, or links to the SharePoint item.
At that point, the request is created in the Power Automate Approval Center and the corresponding notifications are sent to the configured approvers.
Conditions for handling approvals and rejections
After the approval action, a conditional check is usually inserted to evaluate the outcome of the approval:
- If the result is "Approved", specific actions are executed.
- If the result is "Rejected", another path is followed.
In the case of approval, the usual procedure is:
- Send a email (V2) to the applicant indicating that the request has been approved, citing the dates and any comments from the approver.
- Update the SharePoint item to mark the "Approved" field as Yes and save the responsible party's feedback in the manager's comments column.
- Optionally, generate a notification in teams to the HR team channel or the affected department.
For rejections, the pattern is the same, but changing the email message, updating the "Approved" field to No and, if relevant, requesting the employee to modify or reschedule the dates.
Attachments and notifications without corruption errors
One of the most troublesome aspects is handling attachments throughout the workflow, especially when sending them via email or Teams from Forms or SharePoint lists. If the file content (contentBytes) and MIME type aren't configured correctly, you'll likely encounter the common "corrupted file" error.
The key is to use the file content consistently across all actions : if the attachment is saved in SharePoint, it's best to use the "Get content from file" action and then use that content as an attachment in the email action or Teams card, rather than mixing different references. When properly configured, the same file that opens in Excel Online from the list will also open seamlessly in Outlook and Teams notifications.
Once this fit is achieved (although it may take some trial and error), you can have a workflow where approvers and recipients receive fully functional attachments without needing to access the SharePoint site, which is very useful when you don't want to give direct permissions on the library but do want to share the document that is part of the process.
Automation, productivity and return on investment
Beyond the vacation example, the true value of integrating Microsoft 365 and Power Automate lies in the overall impact on productivity and costs. Automating repetitive and critical tasks transforms how teams work.
First, automation drastically reduces the time spent on routine tasks such as sorting emails, moving files, updating lists, generating reports, or setting reminders.
Secondly, automated processes are far less prone to human error . By eliminating manual steps such as forwarding emails, updating statuses, or attaching documents, the chances of making mistakes are drastically reduced. This translates into better information quality and fewer issues to correct later.
There is also a very important component of staff satisfaction : by freeing them from tedious tasks, they can focus on more creative and higher value-added tasks, such as analysis, designing solutions or providing personalized customer service.
Various studies by consulting firms such as Forrester, Deloitte, and KPMG have shown that process automation and RPA projects can achieve very high returns on investment . These studies report ROI percentages of 180%, 186%, or even higher, cost reductions of up to 75% in specific areas, and productivity increases of 30% or more. While every company is unique, the data suggests that, when well-designed, these projects are typically very profitable.
Real-world case studies published by automation providers show scenarios where, for example, an account reconciliation or insurance claim process goes from taking days with manual intervention to being resolved in a matter of minutes, with a return on investment of up to 800% in just a few months. Not all implementations reach these figures, but they provide an idea of the potential.
Integration with Office 365: Outlook, SharePoint, Teams, Excel, and Forms
The true strength of these approval workflows lies in how Power Automate is integrated into the core of Office 365. It's not just a separate tool, but the glue that binds together Outlook, SharePoint, Teams, Excel, Forms, and other external services.
With Outlook, for example, it's easy to create workflows that classify and archive important emails according to business rules, or that, upon receiving an email with a specific label, generate an item in a SharePoint list and trigger an approval process.
With SharePoint, integration is even more straightforward: simply upload or edit a document in a library or create an item in a list to start the workflow. Then, status fields can be updated, approval comments added, the file moved to another library (for example, from "Draft" to "Published"), or even content published to external systems like WordPress.
Teams becomes the collaborative hub for notifications: adaptive cards can be sent to a team's channel with approve or reject buttons, links to the relevant documents, and a summary of the request. This allows approvers to manage multiple workflows without leaving Teams.
Excel comes into play when it comes to storing or exploiting data : form responses can be dumped directly into a spreadsheet while an approval workflow is running in parallel, or automatic reports can be generated from consolidated data across various SharePoint lists.
Microsoft Forms, on the other hand, is the ideal entry point for end users who don't need to see or interact with SharePoint. They fill out a simple form, and behind the scenes, Power Automate takes care of moving that data to the appropriate repository, creating tracking logs, and initiating the necessary approvals.
User settings, permissions, and notifications
For approval workflows to function properly, it's essential to correctly configure workflow users and permissions . Automation is of little use if anyone can then approve sensitive changes or if key people don't receive notifications.
In environments like Dynamics 365 Business Central or SharePoint, you can define specific users and approval groups , as well as rules for who should approve based on criteria such as department, invoice amount, or document type. You can even have versions of the same workflow triggered by different filters, so that some requests go to one approver and others to a different approver.
System tasks ( for example, automatic accounting entries after the approval of a financial journal) can be included as steps before or after user tasks, forming part of the same workflow. In this way, approval not only validates but also triggers additional technical actions without manual intervention.
It's also important to adjust how users receive notifications : email, Teams alerts, push notifications in the mobile app, or a combination of all of them. A well-designed notification system reduces bottlenecks and prevents requests from getting lost in the shuffle.
In scenarios with guest users , Microsoft Entra (formerly Azure AD) allows you to invite external people as "guest users" and assign them the necessary roles so they can participate in approval processes, without needing to give them indiscriminate access to the entire environment.
Long-term approvals, cancellations, and maintenance
Some processes don't resolve in hours or days, but can extend over weeks or months . In these cases, it's important to keep in mind that standard workflow executions in Power Automate have a time limit (for example, 30 days). To overcome this, integration with Microsoft Dataverse comes into play.
The recommendation is to divide the process into two flows when long-term approvals are anticipated:
- A first flow that creates the approval request and registers it in Dataverse using the action “Create an approval (v2)”.
- A second flow that is responsible for processing the responses stored in the Dataverse and executing the corresponding business logic, even if the response arrives when the first flow has already expired.
On the other hand, there are times when an approval request becomes unnecessary: perhaps the requester made a mistake, or the need no longer exists. In these cases, the approval request cancellation feature allows the person who sent the request to access the Approvals panel, go to the "Submitted" tab, select their request, and click "Cancel," confirming if necessary.
From an operational standpoint, it's not enough to simply create a workflow and forget about it: maintaining and regularly reviewing workflows is essential . The reality of the business changes (new managers, reorganizations, new legal requirements), and processes must be updated accordingly.
A good practice is to implement a formal change management process : documenting modifications, communicating them, testing them in a test environment before deploying them to production, and, if necessary, training the affected users. Equally important is establishing metrics and a continuous monitoring system to measure efficiency, execution time, error rate, and bottlenecks.
