cannot send email from Spectrum through Outlook

Thanks for reaching out. I can undersand the concern with needing email to send correctly. Since the email address you're using is a Spectrum email account and not an Xfinity email account, you'll want to verify that the incoming and outgoing mail server settings in Outlook match Spectrum's requirements. For reference, Xfinity email uses:

• Incoming Mail Server (POP3): mail.comcast.net
• Outgoing Mail Server (SMTP): smtp.comcast.net
• SSL encryption enabled

If you're using a Spectrum email address, those Xfinity settings would not apply, and incorrect server settings could prevent emails from sending. I recommend reviewing your Outlook account settings and confirming the correct SMTP and incoming server information with Spectrum support. If the settings are correct and the issue continues, it's also worth checking for any local network issues or service outages. If you're an Xfinity Internet customer, we're happy to help check for service-related concerns on our end as well. Can you let me know if you're receiving emails successfully and only having trouble sending them, or are both incoming and outgoing emails affected?