Worth switching to tuta.com to avoid ending up in spam folders?
I've got a tutanota.com email address from before the 2023 introduction of tuta.com and I recently heard from someone using yahoo.com (fortunately not a common address these days) that my tutanota email ended up in their spam folder. My job involves a lot of "cold calling" where I'm emailing a variety of addresses often run on publications' custom domain names, so I'm now quite worried that I have emails ending up in spam folders with no way of knowing if that's the case. I've read that sometimes sending the emails from the phone app causes more spam-flagging, but I'm sending most of my email from the desktop app on Linux.
I'm wondering whether it's worth the hassle of upgrading and then changing my email address to tuta.com ? Or whether it's unlikely my emails are actually getting dumped in spam that often?
EDIT: I work as a freelance journalist not a professional spammer, so you guys can take a deep breath