Decline mails feel like an even bigger fuck you. Sometimes you don't get a proper reason and it leaves you confused.
There's this one company I applied to, I already knew someone there (not close or anything) and from his tone it seemed like I could help them out a lot. They simply needed more manpower, and I already worked with that stack.
I got declined via mail within an hour. How am I supposed to interpret this as "hmm, they checked my resume, had a long thought and decided it wasn't worth it to invite me for a quick 1:1"? It just screams "we either automate everything or don't even bother looking at our options".
They also finished with a "please subscribe to our newsletter".
How am I supposed to take these applications seriously if they basically tell me to fuck off?