1. Go to https://publish.twitter.com/.
2. Enter the URL of the timeline or Moment you’d like to embed.
3. Customize the design by specifying the height and theme (light or dark) to match your website.
4. Copy and paste the HTML code. (don't paste this into Notion. it won't work yet.)

Generate
Notion Embedable URL with your HTML.
Paste the URL into your Notion Embed block.

Chibi
Nope. The preview shows up on the site in step 3, but just shows the code if I just copy paste, OR just makes a bookmark when embedded. RIP.
Emily
Tweets' target='_blank'>https://twitter.com/postandcourier?ref_src=twsrc%5Etfw">Tweets by postandcourier