Installation Guide – Office 365 Add-in
In this article, we explain in a few simple steps how to quickly install the Aangetekend Mailen plugin for Outlook 365 on your computer. This guide also shows how easy it is to send a registered email afterward.
Important before installation
The Office 365 add-in works based on a mail rule and connector.
Use the following link to learn more about configuring Microsoft mailrules with connector
Installation
In this example, we assume a manual standalone installation. The add-in can also be deployed via tools such as Microsoft Intune or via
admin.microsoft.com → Settings → Integrated apps → Upload custom apps.
Important: You need administrator rights to install software.
Step 1: Log in to the web version of Outlook 365
Step 2: Go to:
https://outlook.office.com/mail/inclientstore
Step 3:
Click “My add-ins” on the left, then at the bottom choose:
“Add a custom add-in” → “Add from file”

Step 4:
Enter the following in the file name field:
https://plugin.aangetekendmailen.nl/365plugin_v3.4/manifest.xml
Press Enter
Step 5: Install the add-in
Step 6: The add-in will appear at the bottom of the add-in screen

Step 7:
Click Continue to accept the license terms and privacy policy
Step 8:
The add-in is now added. Click the X to proceed
Step 9:
The Aangetekend Mailen button is now visible when composing a new email

Step 10:
Select the desired options within the add-in. At the top of the email, you can see which options are enabled

Step 11:
Compose your email as usual and click Send
Send a test email
Keep the following in mind when sending a registered email:
- Add a subject
- Write the email content
- Optionally add an attachment
Aangetekend Mailen is now ready to use.
Support
If you need assistance with the installation above, please contact your IT administrator.
If you still have questions afterward, feel free to contact us at service@aangetekendmailen.nl and we will gladly guide you through the process.