Even if a Vendor is not invited to Vendor Portal, he\she still can be assigned to a job. Then, he\she gets an email notification with a link to the Vendor Portal's younger brother, so-called Job Manager. It looks quite similar, but differs in content.
The Job Manager is just the place for just doing a job - no specific vendor settings, no invoices, no dates. Just received files and a place for the translated ones.
The Job module is the same as in the VP. Worth mentioning is lack of Vendor-specific modules.
Customer support service by UserEcho