What I would like to achieve is an unsubscribe process that is secure, performant and on an external page with the ability to update the internal system table (dataview) _Unsubscribe.

How I imagined this to work is like this:

1. Create an aMPScript variable that stores the values that are needed for the _Unsubscribe dataview separated by a special character
2. Encrypt the variable with AES
3. Create an Unsubscribe Link in the e-mail with a typical a href to our external page and and concat with encrypted variable on it as a parameter value. First three points shown here?
4. Decrypt the url-parameter with the backend of our external shopengine and store it in different variables (RegEx on special sign)
5. Use the client-id and secret from a package created in the marketing cloud
6. Retrieve the access token
7. Do the last two steps with Java Axis 1.4 or something else
8. Create a SOAP-API Call and insert the values into it
9. Send this data to the right endpoint (which is?) when the user clicks the unsubscribe button in the website

Here my Questions:

• Is this the right way to do it?
• Is there a simpler way when you are using an external page and not cloudpages?
• Is the point 2 secure, what do i have to make sure that point 2 is secure?
• Are there any documents you know that can help me with this task?

Kind regards for reading

What I would like to achieve is an email unsubscribe process that is secure, performant and on an external page with the ability to update the internal system table (dataview) _Unsubscribe.

How I imagined this to work is like this:

1. Create an AMPScript variable inside a newsletter that stores the values that are needed for the _Unsubscribe dataview separated by a special character
2. Encrypt the variable with AES
3. Create an Unsubscribe Link in the e-mail with a typical a href to our external page and and concat with encrypted variable on it as a parameter value. First three points shown here?
4. Decrypt the url-parameter with the backend of our external shopengine and store it in different variables (RegEx on special sign)
5. Use the client-id and secret from a package created in the marketing cloud
6. Retrieve the access token
7. Do the last two steps with Java Axis 1.4 or something else
8. Create a SOAP-API Call and insert the values into it
9. Send this data to the right endpoint (which is?) when the user clicks the unsubscribe button in the website

Here my Questions:

• Is this the right way to do it?
• Is there a simpler way when you are using an external page and not cloudpages?
• Is the point 2 secure, what do i have to make sure that point 2 is secure?
• Are there any documents you know that can help me with this task?

Kind regards for reading