Emails in Outbox show error "Couldn't send: Send failure - please ensure your credentials are up to date in mailbox settings"

Symptom

Your emails in your Outbox display a state of Couldn't send. When you hover over that label, the full error of Send failure - please ensure your credentials are up to date in mailbox settings appears.

Applies To

• Users

• Emails
• Mailbox Configuration

Resolution

Resolve this issue in your mailbox in User Settings.

1. Hover over your initials at the bottom of the left-hand navigation and click Personal Settings.
2. Click See all mailboxes.
3. Find and click the affected mailbox.
4. Click Disconnect.
5. Re-connect your mailbox as if setting it up for the first time.
6. Go back to your Outbox and retry the mailings that failed to send.

If this issue persists following reconnecting your mailbox:

1. Hover over your initials at the bottom of the left-hand navigation and click Personal Settings.
2. Click See all mailboxes.
3. Find and click the affected mailbox.
4. Scroll to the bottom of the page and click Show advanced settings
5. Under the header Send Settings, uncheck the box labeled Require mailbox to be recently synced before sending.
6. Go back to your Outbox and retry the mailings that failed to send.