How to troubleshoot email delivery, spam, or bounce issues?

Sometimes a candidate doesn’t receive the assessment invite. Most email issues fall into three categories: Spam filters, Bounces, or Network blocks

1. The Candidate Can't Find the Email (Spam/Junk)

If Xobin shows the email as "Sent" but the candidate hasn't received it:

• Check Folders: Ask the candidate to check their Spam, Junk, and Promotions (Gmail) folders.
• Search the Inbox: Have them search for "Xobin" or "Assessment" to ensure the email wasn't buried.
• Whitelist Xobin: If the candidate uses a corporate email, their company firewall may be blocking external invites. Ask them to have their IT team whitelist xobin.com and Xobin's delivery IP addresses.

2. Identifying Email Bounces

A bounce means the email was returned to the sender instead of being delivered. There are two types:

• Hard Bounce (Permanent): Usually caused by a misspelled email address

Solution: Double-check the email address in your dashboard. If incorrect, delete the candidate and re-invite them with the correct address.

• Soft Bounce (Temporary): Usually caused by a full inbox or a temporarily unavailable mail server.

Solution: Wait a few hours and use the Resend Invite button to try again.

How to Resend an Assessment Invitation

3. Quick Workarounds

If you need the candidate to start immediately and email delivery is still failing:

• Resend the Invite: Refer to the guide below to learn how to resend invites and send a manual reminder.

How to Resend an Assessment Invitation

• Use an Open Link: Generate a public open link from the assessment settings and share it directly with the candidate via other platforms. Refer to the guide below to learn how to invite candidates via open link

How to Invite Candidates using an Open Link

• Try a Different Email: If a corporate email continues to block the invite, ask the candidate for a personal email address (such as Gmail or Outlook) and resend the invite there.

Updated on: 05/14/2026