A short message instant messaging system can not replace a long message offline capable system like email. They are fundamentally different things. The achieva

A short message instant messaging system can not replace a long message offline capable system like email. They are fundamentally different things. The achievable security is significantly higher for an offline capable medium for example: * https://articles.59.ca/doku.php?id=em:emailvsim https://articles.59.ca/doku.php?id=em:emailvsim It is clear to me at least that we are stuck with at least 2 problems here. I have wondered if you could at least generalize the two modes in a way that would allow you to have one client and let the user decide.