cannot send email at all

Question

Hello,
I am having major difficulties with my hotmail account. Every single time I try to send an email, even without attachments or a signature, it comes back saying it was spam. I have tons of space left. This makes zero sense. I have tried all of the suggestions made by AI.
I'm not sure what, if anything, can be done.
I'm so frustrated!

Answer 1

@CPA Élan said

very single time I try to send an email, even without attachments or a signature, it comes back saying it was spam.

If you have already tried the suggestions from the AI Answer with no luck, it is possible your account has been compromised and the hackers are using it to continuously send Spam or other operations not allowed by Microsoft. This will cause your account to stay blocked no matter what you do.

For some steps you can take to secure your account after a hack, see the Answer by "EmilyS726 Sep 6 2026" in https://learn.microsoft.com/en-us/answers/questions/5996031/emails-being-sent-to-bitcoin-type-site

Answer 2

Since attachments, signature, and storage space have already been ruled out, the most relevant next checks are account restriction, recipient-side filtering, and spam reputation.

1. Check whether the account is temporarily blocked. If Outlook.com detects unusual sign-in activity, sending can be restricted even if mail can still be received. Review the unblock flow here: unblock your Outlook.com account.
2. Send a plain test message to the same Hotmail/Outlook.com account from Outlook.com in a browser. Use:

• one recipient only
• no attachment
• no signature
• no links
• no copied formatting

If that still fails, the issue is likely not the message content.

3. Turn off VPN, proxy, or privacy relay if any are in use, then try again. If possible, switch to a different network such as a mobile hotspot and test again. Spam-abuse errors can be related to the sending IP reputation.
4. Check antivirus email scanning. If security software has settings such as Internet Email Auto Protect or Internet Email Protection, disable only that email-scanning feature and send a test message again.
5. Check whether the problem is only with certain recipients. If messages are being rejected by specific organizations, their mail system may be classifying the message as spam. In that case, the recipient may need to add the address to their safe senders list.
6. If a non-delivery report is returned, review the exact reason in it. Common causes include:

• invalid recipient address
• recipient mailbox full
• recipient server issues
• recipient spam filters

7. If the account is new or many emails were sent recently, review Outlook.com sending limits. New accounts can have a temporary low sending quota until credibility is established.
8. If the failure is specifically when sending to Outlook.com or Hotmail recipients, use Sender Support in Outlook.com. That is the documented path for Outlook.com deliverability issues.

If the bounce says the message is spam every time, even for a plain message to the account itself from Outlook.com in a browser, the strongest supported next actions are:

• unblock the account if restricted
• remove VPN/proxy and try another network
• disable antivirus email scanning
• use Sender Support if the issue is with Outlook.com/Hotmail delivery

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