Read receipt on emails sent
Essential to get a read receipt on invoices sent in Xero.. A date stamp of when the recipient received/ read email would stop all Hesitation when customer said they didn't get it.
Not good enough to have date stamp of when sent.
Similar system to outlook

As this forum is for developer API functionality requests and yours relates to something that would need to happen in the main application, I’m afraid we have to decline this suggestion, but don’t take it personally – we would still love to see you make your suggestion in the Xero Community forum: https://community.xero.com/business/