Chatter に"Poll" Tabが表示されない

• Chatter is not showing "Poll" Tab.
• Ability to Chatter about and follow a Report and Dashboard
• Now for a little fun: Post something to Chatter, and include an inline image in your post. Remember, post to the Chatter feed in your Trailhead Playground, not your company’s Salesforce org.

Can you check the Global Publisher layout to see if the 'Post' is added?

Emails are not showing in chatter feed item

• Emails are not showing in chatter feed item

refer https://help.salesforce.com/s/articleView?id=000386458&type=1