Hi Tara Dupuis,
Welcome to Microsoft Q&A.
If Jotform re-adds your Hotmail/Outlook.com address to their bounce list immediately and you never see the messages in Inbox or Junk, that typically indicates the messages are being rejected during delivery (SMTP) before they reach your mailbox. In that case, Safe Senders/Junk settings won’t help because the message isn’t being delivered.
Here are the next best steps:
1) Get the exact bounce/NDR details from Jotform (most important)
Ask Jotform for the full bounce log from a test send, including the SMTP error code (for example 550 5.7.x / 451 4.7.x) and the message text. That code tells us whether this is a temporary throttle, policy block, or sender reputation/authentication issue.
2) If the NDR mentions a blocked sending IP
Jotform (as the sender) can use Microsoft’s Anti-Spam IP Delist Portal to request delisting of the sending IP listed in the NDR: https://sender.office.com
Note: As the recipient, you may not have the sending IP; Jotform will need to perform this step.
3) Alternative approach you can control: Use a custom authenticated sender (SMTP)
To avoid reliance on Jotform’s shared sending infrastructure, configure Jotform notifications to send through your own authenticated SMTP/custom sender (or temporarily route notifications to Gmail until delivery stabilizes). This is often the fastest way to stop repeat bounces.
Note: If you have two-step verification enabled and the SMTP client doesn’t support it, you may need to create and use an app password instead of your normal password.
For reference: How to get and use app passwords
Share the exact NDR back here
Once you have the SMTP code/text from Jotform, please reply with it (remember to remove personal info). We can then confirm the most likely cause and the most direct fix.
Please let me know if this proves useful to you, or if you would like further assistance.
I'm looking forward to your reply.
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