A customer texts back asking when their order will ship, and if that reply just sits in the SMS thread, the person meant to answer it never finds out it arrived. By the time someone checks the inbox and notices it manually, the customer has often already asked twice or given up, and the goodwill from a quick answer is long gone.

Lettr and Mobile Message can be linked through Zapier so a reply like that triggers an email automatically. A reply to a text message can send an email through Lettr to alert the right person straight away, and if a text fails to deliver, that same event can send a templated email through Lettr so the team knows to follow up another way, whether that means a phone call or a different message entirely. Nobody has to sit refreshing the SMS thread waiting for something to arrive because the email does that watching instead.