Is it possible to catch a virus just by opening a letter?

Question

gmail

Maybe a stupid question, but whatever. Accidentally opened a letter today (in the browser), and there is a picture embedded in the body of the letter. I didn’t click anywhere in the letter, but some sediment remained ...

Answer 1

In some mail clients it is possible.
In gmail, this is well monitored, and all loopholes are promptly closed. The risk is insignificant.

Answer 2

impossible. Only if you clicked somewhere in the letter.