Ability to recall an email

When will this feature become available to to Front? users don't particularly care for the option to "Undo" send, since it does not serve a greater enough purpose unless they can think of why they'd want to undo within the 10-15 seconds or longer. an on the flip side, that it takes "too long" to send emails if left at a longer interval, which then creates the negative impact that ok "Front it just slow". So why not just have a message recall option built right in the same way outlook does?