OnMessageExpunged MessageEventArgs returning UniqueId null

[usamasarfraz]

[Jeffrey Stedfast]

The expunged event will never get a UID.

[Jeffrey Stedfast]

To add a little more background (was on my phone earlier):

MessageEventArgs is used as args for many of the message-related events emitted by ImapFolder where the UID is often available and that's why it has the UniqueId property.

Perhaps, in hindsight, I should have used a special MessageExpungedEventArgs which only had an int Index property for this event, but it seemed overkill at the time.

[usamasarfraz]

Thanks for your consideration.