I do this with email. Email newsletters and all of the feeds I follow (via an RSS-to-email service) are filtered into folders in my email.
1. In the past I've just created emails in folders. However not all email clients make this easy. I've been experimenting with Instapaper which has a feed of your saved items. So I can simply trigger the bookmarklet and then it shows up in my items shortly after.
2. Most email services support rules for incoming. Rules for date-expiry are less common but some providers have them.
3. I suspect you already have your email synced to all your devices.
Comments
I do this with email. Email newsletters and all of the feeds I follow (via an RSS-to-email service) are filtered into folders in my email.
1. In the past I've just created emails in folders. However not all email clients make this easy. I've been experimenting with Instapaper which has a feed of your saved items. So I can simply trigger the bookmarklet and then it shows up in my items shortly after.
2. Most email services support rules for incoming. Rules for date-expiry are less common but some providers have them.
3. I suspect you already have your email synced to all your devices.