This is where I get my passive-agressiveness from

So I emailed my family and friends a picture. It was a pretty funny picture, so I kinda expected some reaction from the recipients. Yet the next day barely 3 people had replied me.

Why? I wondered.

I later realized that some people weren't able to see it because the file was extension-less. So I resent the file (with a brief explanation and apology), and within hours several people replied my email.

One of them was my dad:

claro que los que sabemos ver fotos si la pudimos ver

saludos mi niña

muy bonita foto

My dad, a man of brief yet powerful words.