Change the size of logo in confirmation E-mail

[betterlead]

Exactly how can I change this oversized Logo in the confirmation E-mail? (It's resized to 3x bigger than the original logo.)
I've been looking for a solution in the forum but find only mega debates on similar questions. (Styling confirmation E-mails and invoices)

Which file do I have to find and the place (row) to change. (Just opening the mail_html_header.php doesn't help me.) No, I'm not good at all at these things...

It would be so good to just fill in the size in pixels... In the right place...

My very best to you all and hopefully someone has the answer to me. (I simply want professional looking E-mails - and that seems to be really hard to achieve if your not an expert in coding.)

VM: 2.6.14
J: 2.5.28

[jenkinhill]

In the VM backend open the Shop / Invoices/Emails tab. Under Invoice Head  set Size of Vendor Image: to your required width. Save. That should do it.

[betterlead]

Cheesus! Thanks - that easy... Yes, a bit ashamed...