How do I save mail in draft when system disconnect internet connectivity

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Is there any way to save mail in draft when there's no internet connectivity.? or in half way of process system disconnect internet so is there any way to save or move mail in draft.?
using smtp server and asp.net?

What I have tried:

I'm researching on it, thus nothing found useful.

Posted 10-Jan-20 0:24am

Member 14704249

Updated 10-Jan-20 2:06am

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MadMyche · Answer 1 · 2020-01-10T02:06:00

In layman's terms, an SMTP server only has two "folders"; being "outbox" and "sent". There is no "drafts" folder; that is just a construct of the client that connects to the SMTP server.
As the developer of the client application that is originating the operation, it is up to you to perform this "draft" function locally.

An email is simply an ASCII text file, so you have multitudes of options of how to save the data within it.

1. You could create an actual folder on the hard drive for each email (hint: use a GUID or some other unique naming method) and save the individual portions of the message within it. When this message has its status changed to "sent" then move the entire folder to a "sent" directory

2. The way I store emails is within an SQL table, again using a Unique GUID as the MessageID, and you can add a BIT column to see if it has been sent or not