Cannot send new apple email message on Macbook

Hi,

If you can't send an email on your MacBook, you can try these steps:

• Check your internet connection: Make sure your Mac is connected to the internet. 
• Check your email account settings: Confirm that your email address, password, and other settings are correct. 
• Check your email provider's status: See if your email provider is experiencing an outage. 
• Check your storage quota: Make sure you haven't exceeded your email provider's storage limit. 
• Check your outgoing mail settings: Confirm that your outgoing mail server (SMTP) settings are correct. 
• Restart your email account: Remove and then re-add your email account in Mail. 
• Check your email service provider's documentation: Contact your email provider for help configuring your account. 

You can also check for status messages in the Mail sidebar or top right-hand corner of the Mail window. A status icon, such as a lightning bolt or warning symbol, may indicate a problem. 

If you're using iCloud Mail, you can also: 

• Check that iCloud Mail is turned on
• Make sure you haven't exceeded your iCloud storage limit
• Use the latest version of software on your device