Basically the title. For example, on things like Slack, WhatsApp, Teams and other IM services, you can edit messages after sending but with an email you can’t. I believe Microsoft Outlook has a feature that allows you to edit emails but afaik, it isn’t the same. What is the difference (technology wise) between the two that accounts for this difference?
Note: I know they are different systems. I’m asking what specific aspect of these applications makes emails difficult to edit, or would it (again, techwise) be easy to integrate this into an email system and for whatever reason, it hasn’t been done?