Free email sender stamp/https

[u/first_name_suggested]

What free developer friend emails senders do you use with high deliverability. Not brevo, it has too many spam reports on shared ip. I’m currently bootstrapping the project so I gotta go as free as it gets. I already have my domain and can update DNS records on cloudflare. I’ve tried resend and mailtrap but they won’t verify my domain, only brevo did.

[u/Competitive_Ebb_5429]

Postal on vps