Entourage 2004 has no size limit, just a limit to the number of items in the
Entourage database: 2 million database items.
Entourage X has a 4 GB limit on the Database file (there is no Messages
file), and you will be warned as you near the limit. As you finally get
close enough, it will force you to compact your database.
Entourage 2001 has a limit of 2 GB on both the Database and Messages file.
It does not handle this limit very gracefully, so you may experience data
loss if you hit it.
More info: said:
This question seems to evoke occasional arguments here. I find that
Entourage works a lot better (faster, etc.) if you keep the sizes of
your folders small. Of course frequent manual database compaction is
also a must. m.
It is a very bad idea to use the rebuild functionality when it is not
needed. If you need space on your disk or you want to get the file into
contiguous space on your disk, go ahead and use compact. Only use rebuild if
your file is damaged. (tip provided by one of the Entourage developers)
If you are concerned about size, you should consider archiving your older
data. One option is to create a second identity for easy switching for your
older mail. For options on archiving see:
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http://www.entourage.mvps.org/backup.html>