No there isn't at the moment, but we could potentially add this feature.
Do you want to enter the username/password as part of the folder configuration?
This would mean that the credentials would have to be stored in the configuration file. They could be obfuscated, but since the server needs to be able to read them it would also be possible for an attacker who gets access to the configuration file to read them. Is this acceptable to you?
- Hans (EnterpriseDT)