Comment by guywithahat

> it [gmail] runs its own reputation system that has absolutely nothing to do with anyone else’s opinion of you. If you don’t do certain things “correctly” (meaning Gmail’s own definition), you get marked as spam.

I mean that's correct; I choose email providers in part due to their spam protection. I don't want to follow what a company believes is the right amount of emails, I want to decide and if they fail they should be blocked. I wouldn't be surprised if that 99% sendgrid rating is either due to some dark pattern or because everything is already being sent to spam except for those who specifically allow it.