From here you can reply or choose one of the actions to perform (by tapping the icons above rather than swiping).

FORBES: Mailbox App Revolutionizes Gmail Productivity, Will Google (Or Apple) Buy It?

Here is another reply I sort of expected to receive.

CNN: Blog: Getting by during the last week

It's been writing to people here and inviting them to reply to a London Freepost address, but the FSA says it's not officially authorised so anyone investing should be very very careful - they're not covered for any compensation should things go wrong.

BBC: Money Box - Saturday 30 December 2000

Maybe not, you reply, but, by the way, we also employ 50 people round here, don't we?

ECONOMIST: A matter of give and take