This applet helps you to keep track of the articles you read. Unfortunately, pocket doesn't have an ingredient for the archived date. In case you want to keep track of how many articles you read in one month, I would recommend you to add a tag to it and parse it.
Then
Add row to spreadsheet
This action will add a single row to the bottom of the first worksheet of a spreadsheet you specify. Note: a new spreadsheet is created after 2000 rows.
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