[horde] Why does this happen:DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA

[Orlando Pamplona Eing]

Whenever an user opens a message in the browser, when lowering the messages
for his/her machine, a message of the type exists below, for each message
that the same opened in the browser. Why does this happen?

This is the message:

Title: DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA

This text is part of the internal format of your mail folder, and is not
a real message. It is created automatically by the mail system software.
If deleted, important folder data will be lost, and it will be re-created
with the data reset to initial values.


Thanks.

Pamplona
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