I see, thanks. I had the experience of having some mails ending in gmail spam box until we added SPF, but we were a young company (and thus, domain name), and i

I see, thanks. I had the experience of having some mails ending in gmail spam box until we added SPF, but we were a young company (and thus, domain name), and it was in 2014. I wouldn't feel confident recommending not using SPF to anyone, though :)