In my experience, if you're a good candidate, it doesn't really matter how they get a hold of you (or your resume). I got offered a job at all three Swiss companies I applied to, and I do not by any means have the swiss-style resume (just two pages, no picture, no copies of degrees or transcripts, in English not French or German, etc). I submitted all by email/website or via a recruiter (who received my resume by email). (shrug)

But if I were you, I would just simply submit the application both ways. Send it via email with a nice cover letter, and then submit it via snail mail with nice cover letter. In case some obnoxious HR is more worried about "following the rules" than seeing what you have to offer the company and "threw your application in the bin" when they received it by email, they will then receive the "proper" one by post a couple of days later.

Besides, usually IT/engineering departments tend to be more chill about procedural rules than other industries like financial, customer service, etc. But if you happen to know anyone inside the company and get your resume submitted to the hiring manager in person, then that's undoubtedly the best way.

Good luck,

-E.