[otrs] Unregistered customers ?

Hi, I've been looking for a new ticketing system over the past few months and I keep coming back to OTRS. We have have multiple support teams supporting internal customers, that seem simple enough. We also would like to support external customers, but we don't want to create customer accounts prior to use. We're a non-profit, we have donors who email us questions and requests, we want to capture these conversations in the ticketing system. Does OTRS support unknown customers creating tickets via email ? Does it automatically create a new customer account based on the email address (that would be fine) ? Many thanks Matt