Outlook.com has blocked your message

Question

this is what I am getting: Outlook.com has blocked your message. The daily message limit helps us free the world from spammers--we're sorry that it's getting in your way.

I have had 10 geek squad people working on this!!!! They finally gave up. The first one set up an additional email account for me. I tried to send out a BC to about 15 people. Outlook has returned it with the above message. How do I expand to allow me to send out a blanket email? My other hotmail account works perfectly.

Answer 1

Hello,

I will be completely honest with you; this is not something you can flip a switch on and then it is expanded. This is why none of your geek squad support could find you the solution.

Every account's sending limit is different. It works like a credit score; it is entirely calculated based on the account's usage history and credibility over the years.

There are a few things you can set up to improve this sending limit, but it is not something you will see results over night.

https://support.microsoft.com/en-us/office/sending-limits-in-outlook-com-279ee200-594c-40f0-9ec8-bb6af7735c2e > How can I increase sending limits Section.

Sending to a group of recipients is typically met with the most scrutiny. You might want to break it down into batches for now for this account.

Answer 2

Outlook.com is blocking messages from that account because its sending limits or spam-protection rules have been triggered.

Key points from Outlook.com limits and anti‑abuse rules:

1. Daily and per‑message recipient limits
   • Outlook.com limits how many recipients can be sent to per day and per message.
   • For Microsoft 365 subscribers the documented limits are:
     • Up to 5,000 recipients per day.
     • Up to 500 recipients per message.
     • Up to 1,000 “non‑relationship” recipients per day (people never emailed before).
   • Limits can be lower for non‑subscribers and for newer or less‑trusted accounts.
2. New or recently created accounts
   • New Outlook.com accounts have a temporarily low sending quota until they “establish credibility in the system.”
   • If the additional account was created recently, even a small bulk send (like a BCC to 15 people, especially if many are new contacts) can trigger the protection and cause Outlook.com to block the message.
3. What to do to send a blanket email safely
   • Keep the recipient count modest and send in smaller batches if needed.
   • Make sure the people being emailed are added to Contacts in Outlook.com; this helps distinguish them from “non‑relationship” recipients.
   • Use the account gradually over time (normal one‑to‑one mail) so the system builds trust and the quota increases automatically.
   • Avoid sending the same or very similar content repeatedly to many recipients, as this can look like spam.
4. If messages are still blocked
   • If the account is new, the restriction is temporary and will relax as normal, non‑spammy usage continues.
   • If a non‑delivery report or “delivery failed” message is received, check the error details. If it mentions being “blocked” or “listed in” a spam list on the recipient side, the recipient’s provider may need to unblock the account or domain.

The other Hotmail account works because its reputation and sending history allow higher limits. The new or affected account must build that same trust; the limits cannot be manually overridden.

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References:

• Sending limits in Outlook.com
• Sent email in Outlook.com comes back "delivery failed"
• Can't send or receive email in Outlook.com