Missive is great and allows for a lot of customisation and wonderful use cases.
One of them is the ability to reply with a different email address than the previous has been received on. But sometimes this happens without the user noticing, because of some setting or automation.
We encourage all users to be diligent and check all fields before sending an email. As trust in Missive is strong, most people don't bother and know it will be fine.
More often than I care to admit, someone send an email from the wrong account/alias/address, because they didn't notice the automatic change.
It would be great to have a little warning indicator. Either a highlight, an icon or even a modal, warning the user that the email address in the from field differs from the receiving address on the email they clicked "reply" on.