Undeliverable mail

Hi Looneytune42,

It sounds like you can't send emails through iCloud on the website to your work email it says it's undeliverable. In that case, we'd test sending another email to see if this only happens when you attempt to send it to your work email address. You could email your own iCloud account and it should show up in the iCloud inbox, if it successfully sends the email.

If you do test sending another email from iCloud to your work email, we'd confirm the contact is reflecting the correct email account before you select it or type it in manually.

On the iCloud website, if you select your name or icon on the top right side, it should take you to the account details. Do you have enough available iCloud storage? Sometimes the email account stops working if there isn't enough space to store the messages.

Hoping to hear back, cheers.

Hello Looneytune42,

Thank you for using Apple Support Communities. Based on your post, you can't send from your work email account on your iPhone. We'll do our best to assist.

For issues with sending emails, try steps in: If you can’t send email on your iPhone, iPad, or iPod touch

It sounds like the iCloud account works fine when you send and receive emails to that account.

In this case, if the steps above do not solve the issue for you, then we'd recommend partnering with your work's IT department on how to solve this.

Wishing you well, take care.

Hey Looneytune42,

Understood. What happens if you test it out now with the previous steps provided? What happened?

If you haven't yet, it might be best to connect with Apple directly: Get Support

Hoping to hear back, take care.