The newsletter block on your home page and blog sends every signup straight into your Aveiro audience. Aveiro is where you then write, send and measure the newsletter itself, so there is no list to export or sync.
Create an embed form
Sign up for Aveiro, open Audience → Embed and create a form. Add your portfolio's domain to the form's allowed sites, then copy the form's public ID.
Connect it to your portfolio
Paste the public ID into the newsletterForm object. Signups go to Aveiro directly from the page, with no new tab and no redirect.
Newsletter content
You can change the headline and description in content.tsx, or hide the block with display: false.
Background effect
The block's background is set in the same newsletterForm object. Turn the gradient, dots, lines and grid on or off and tune how they look.