What is the capacity of the log file storeage on the SMS finder? Also, is archive to an SMTP server a possibility?

With the current shipping product, you can manually Web login to the SMSFinder and archive the send and receive SMS logs manually.

The log files are only available when the SMSFinder is running live, when you power cycle, all the log files will be reset. The size of the log files can reach upto 100K

We currently do send a log file to an email account when the log file is full and this log file contains ALL the send and receive SMS messages.