Do you have HubDB? If so, you could create a Table, use the HubDB API to get the content into HubSpot and output it with a custom module in your email.
If you don't have it you could overengineer a blog function for this. So basicly create a non-listed blog, put your informations into it (also possible with API) and output it with a custom blog post module into your mails
A third option could be to create custom CRM objects.
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