I have just paid for this, version 5.5 and I am not very happy with it. First off, even though I entered my reg number it still won't save emails. Secondly, even though I only have a text file of 10 emails to test. 8 are coming up 'Domain Doesn't Exist', and 2 are valid. It should be 8 valid and 2 not valid. Any idea what I am doing wrong and anyone got anything positive to say about this software? BTW I have contacted support some hours ago and still waiting for them to egt back to em.