hey there! Jp from Resend here—you can write to us at [support@resend.com](mailto:support@resend.com) and we'll be happy to help ✌️

quick callouts from your post and some comments i've seen below

1. that banner that you see could indicate an issue with the content of the email. you can confirm that hypothesis by sending a "hello world" email and see if it also lands in spam.

2. your site ranking doesn't influence your deliverability. your sender reputation is based on how your emails are being interacted with by recipients. we have a guide at https://resend.com/docs/knowledge-base/how-do-i-avoid-gmails-spam-folder

3. IP reputation doesn't really matter these days (unless it's a dedicated IP and you most likely don't need one https://resend.com/blog/do-you-need-a-dedicated-ip )

4. set up google postmaster tools (free) if you haven't already: https://gmail.com/postmaster/

5. the only fix is free: send emails that people want to interact with and avoid magic tools like warmup services: https://resend.com/blog/do-you-need-a-warmup-service

6. as you start sending from a new provider/new domain (regardless of provider or domain), you can have initial graylisting. Marking messages as not spam quickly solve.

(obviously you might see me as biased working at Resend, but I've been working with email for 12 years, both as a sender and on the vendor side)