The best thing about this product is that it integrates with all our applications (mailchimp) so we don't have any issues when sending mailings or updates across channels! One of my favorite things was there ability for different users within one account/email address be able create their own segments which helps us send more relevant messages as needed without spamming people unnecessarily by having too many options at once etc.. I wish you could set up some type system where if someone hasn'y opened an envelope before then only let them do 1 mailing per day but also allow multiple recipients from same list who haven received previous mails still receive additional ones until those are read? That would make sense because not everyone likes getting 10+ notifications every few minutes asking "did i open xyz?". Would love something like that :). This has really helped improve click.