Emails fall into "Spam" folder

[agasar]

Hello

I sent a test mail from the link above, the result is perfect, very nice 10/10
But the sent emails still fall into the "SPAM" folder. Could this be the reason?
I added DMARC later. But the emails I send still end up in the spam folder. It falls into the spam folder of private banks. It goes to Gmail and other emails normally.
When e-mails are sent to banks, they fall into the "SPAM" folder of the banks. I added DMARC later, can it be caused by that? I added DMARC later.

 

[Zhenyapan]

Banks nice protected, so they use own filters and you must ask their admins which rule don't pass your email (if you have such privileges).

 

[agasar]

The clerk at the bank does not know which rule does not go through the e-mail. A person working at a bank, checking emails. Emails because they are in the bank's SPAM folder. The customer says, I am sending an e-mail to the bank, he says it does not go. However, it goes, but since the bank does not look at the SPAM folders, it is thought that the mails are not sent, whereas it goes but falls into the SPAM folder.