Using ProtonMail for newsletters – deliverability?

Hi all,

I'm working on a collaborative project / resource and we need an joint email address to manage it, thinking about using Proton for that.

Part of that project will be sending newsletters via Kit (that people sign up to, so no spamming or anything like that). Is anyone aware of any deliverability issues when using Protonmail as a "from" address for newsletters via dedicated services like Kit / MailerLite etc? We won't have a separate website for the project (for now anyway) and thus far I've only ever sent newsletters from custom domain names (as it mail@yourcustomdomaindotcom).

Any insights are welcome. Thanks!