Is reading email on the web site a way to avoid viruses?

[Sandigroper]

We have been warned to delete email unopened, for which the source is unknown and which has an attachment so as to avoid a virus.
Is it OK to access this mail on the website (IP server) and open it there or does the warning still apply?  Will doing this increase the risk of infecting the website server?  Thanks for your advice.

[Carbon Dudeoxide]

If you open the unread email, it should be no problem. Downloading or opening pictures or clicking on links is the dangerous part.

What are you using to view your emails?

(program or web-based?)