I’m afraid that this may be a server bug (the search is done entirely on the IMAP server side).

I have just tried to client.Search().Where(Expression.UID(Range.From(100))); it still return me the email with biggest uid on server (25). however, when i use rang.creat(26,100), it give me the correct result (no emails found).

You can use Expression.UID method.
It allows you to select a range of uids you are interested in.

To search uids greater that a certain value:

List<long> uids = client.Search().Where(Expression.UID(Range.From(55)));

To search uids in specified range (from 55 included to 135 included):

List<long> uids = client.Search().Where(Expression.UID(Range.Create(55, 135)));

I am a web developer who is trying to implement a web mail as a part of the project that i am working on. it requires synchronous the local cache and imap server. would you please let me know how would I search mailbox by uid? (i need to search uid greater than a certain value) so that i can only download the email from server which haven’t been downloaded yet.

many thanks

best regards

Louie

The search is done entirely on the server side.
If the server implements search functionality incorrectly there is not much we can do.

Could you prepare a log file for us, so we can make sure that Mail.dll generates correct search query?

When I search for Expression.From(“name@domain.com”) – it does not find the mail.

So, it appears to only search the display name of the from text, not the from email address.

Is there any way to search for the from email address?

The expression you provided works exactlly like you want:
sentsince>2011/09/01 && (from == “a.com” || from == “b.com”)

Yes, it should work exactly like you put it (I just applied some formatting).

List<long> uidList = imap.Search().Where(
	Expression.And(
		Expression.SentSince(DateTime.Parse("01.09.2011")),
		Expression.Or(
			Expression.From("a.com"),
			Expression.From("b.com")
		) // or
	) // and
); // where

?
in other words: where sentsince>20110901 && (from ==”a.com” || from ==”b.com”|| from ==”c.com”) etc etc

Thanks,
knut