I like that you can create as many email templates for different types of documents in order to keep it organized, easy access when needed & very quick response time (as soon we send them our emails they get back right away).
As far sending out invoices or other business related information this product has been great! The only thing i dislike about their service are if your not using one specific computer/device then sometimes its hard finding where exactly what document needs editing so maybe adding more folders would help with organization? For example having all my invoice files within 1 folder rather than doing 2-3 separate ones which makes getting into each easier once sent off. Also some people have had issues uploading PDFs but thats because there isn't enough space left available after downloading from another website previously such things could be avoided by making sure everything downloaded first before trying again.