Unable to send email

@Again​ thank you for that

Hello, thank you! 
i use my mobile phone. Never had this problem prior. No recent changes to my phone or email although i have tried deleting and reinstalling the mail  account and resetting my password to see if it would fix the issue with no success. 
When i did that i started receiving emails but got a notification that i was unable to send them. I did try the fixes in settings recommended with no luck. Now I’m no longer receiving or able to send email from my Comcast account. 

Always our pleasure to help, @rialinn! It sounds like there is a synchronization or authentication error between your mobile device and the Xfinity mail servers. Since you've already tried reinstalling the account and resetting your password, the issue often lies in the Incoming and Outgoing Server Settings (IMAP/SMTP) or a security setting on the Xfinity side. Here is a guide to troubleshooting and resolving this:

1. Enable "Third-Party Access" (Crucial Step)
We have a security feature that can block third-party email apps (like the default Mail app on iPhone or Samsung) from connecting to your account.

- Log in to the Xfinity Webmail portal via a web browser.

- Click the Gear icon (Settings) in the top right.

- Select Security.

- Look for a checkbox that says "Allow access to my Xfinity Connect email through third-party programs" and ensure it is checked.

2. Verify Manual Server Settings
When you re-added the account, the phone may have auto-filled the wrong port numbers. Go to your phone's Settings > Mail > Accounts > Xfinity and verify these specific details:

Incoming Server (IMAP):

- Host Name: imap.comcast.net

- Port: 993

- SSL: On

- Authentication: Password

Outgoing Server (SMTP):

- Host Name: smtp.comcast.net

- Port: 465 (or 587 if 465 fails)

- SSL: On

- Authentication: Password

- Username: Your full email (including @comcast.net)

3. Clear the Outbox "Logjam"
Sometimes a single "stuck" email with a large attachment or a glitch can prevent all future emails from sending or receiving.

- Open your Mail app and look for an Outbox folder (this usually only appears when a mail fails to send).

- Delete everything currently sitting in the Outbox.

- Restart your phone and try sending a fresh test email to yourself.

4. Check for Data Restrictions
If you are on a mobile device:

- Ensure Low Data Mode is turned off in your Cellular settings.

- Check that the Mail app has permission to use Cellular Data (Settings > Cellular > scroll down to Mail).

- Try switching from Cellular to a known-working Wi-Fi network to see if the behavior changes; if it works on Wi-Fi but not Cellular, the issue is with your mobile carrier's data restrictions.

Please let me know if this resolves things for you!