View as a webpage links being used in archive
I found out recently that a different team has been using the View in a webpage (VAWP) links for a website archive. The emails are "alerts" to a specific audience and the website archive is behind a secure login. We are required to keep a rolling 2 years of "alerts" in the archive. I found out we were doing this because now emails from 2019 (and one from 2020) are giving 404 errors.
I assume that utilizing this link isn't a best practice since from my own testing the VAWP links are dynamic. Of course Marketo only shows 6 months in the audit trail otherwise I was going to look up the emails to see if a draft had been created and approved over the previous version. In the archive one email from Jan 2020 has a broken link, and that campaign has an approved email with a draft.
I have two questions: 1) should we stop using the VAWP link and 2) any recommendations for storing emails in an archive other than PDF?