Here are some suggestions to ensure you can receive an email test draft.
Check all your email folders. Including the Spam, Junk, and Promotions folder.
Please note that test drafts are not being deployed out of the same sending server as bulk email. This is to help maintain the deliverability of your bulk messages.
Check to see if the FROM email address domain is the not same as the recipient. Typically the recipient email server will reject this knowing the email didn’t originate on its own server.
For example, the from email address: email@example.com Recipient email: firstname.lastname@example.org
Try sending from a different FROM email address domain.
You can also contact your email provider to add an SPF record or whitelist our sending IPs.
3) Contact our support to request the email log for the email address you are trying to send to.
4) Provide our email log to your email provider for the email address you are trying to send to.
5) Check security/antispam settings for the email address you’re trying to send to and add the FROM email address as a Safe Sender.
6) Request from your email provider to add an SPF record for the email address you are trying to send to with our sending IPs.