Summary

You may see the error message “Message cannot be delivered to the email address” when trying to invite a new member to your team. This typically occurs if the email address cannot be verified or if it is blocked by email security systems.

Affected Feature

Workspace Members → User Invitations

Why It Happens

This error is triggered when our email verification tool is unable to confirm the deliverability of the email address. Common reasons include:

• The recipient’s email server uses strict security filters (e.g., Mimecast, Proofpoint) that block verification checks.

• The email address could not be verified at the time of the request due to a temporary issue or network delay.

• The address may be inactive or invalid.

How to Resolve It

Here are a few things you can try to resolve the issue:

1. Wait and Try Again
   Sometimes, the email verification fails due to temporary issues. Wait for 5–7 minutes and try inviting the user again.

2. Confirm the Email Address
   Ensure there are no typos or extra spaces in the email address.

3. Clear your Application Cache

   • Follow the steps in 📄 How to clear application cache?

   • Refresh the page and try the invitation again

4. Contact Support
   If the issue persists, please contact our support team with the email addresses you'd like to invite. We will manually add the users to your workspace on your behalf.

Important Notes

1. Some enterprise email systems may block automated verification or invite emails. You may need help from your internal IT team to allow emails from Astra.

2. We recommend reaching out to the user to confirm that their email system is not blocking external messages.