Daily Limit - New Email Account

Hi,

Thanks for reaching out to the Microsoft community. It looks like you’re running into Outlook’s sending limits, which are in place to prevent spam and abuse. These limits are based on how many recipients you can include in a single email and how many you can send to in a day. They aren’t related to the size of your mailbox or the emails you imported from Tutanota, so yesterday’s migration didn’t affect today’s quota.

What’s happening is that Outlook usually allows around 500 recipients per day and about 30–50 per message, depending on the account type. If you’re trying to send to 30 or more people right after moving your account, the system may temporarily restrict you because bulk sending can look suspicious. Even though you’ve updated your security settings, the system might still enforce limits until your account builds trust.

To work around this, you can split your list into smaller batches and use BCC for privacy. If you regularly need to email 50 or more people, creating a contact group in Outlook or using a distribution list with Microsoft 365 Business can make things easier. These restrictions usually ease after 24–48 hours, but if this is urgent or happens often, you can contact Microsoft Support to review your account or consider upgrading to a plan with higher limits.

Hope this works, please let me know how it goes, happy to help!

Regards,

Edward

Hi,

Thanks for getting back to me. Outlook and Microsoft 365 have daily sending limits in place to prevent spam and abuse. For new accounts, these limits start out much lower and gradually increase as your account builds trust over time.

Importing emails from Tutanota doesn’t affect your sending quota because the restriction is based only on outgoing messages, not on migrated data. For Microsoft 365 subscribers, the usual limits allow up to 5,000 recipients per day and 500 recipients per message, but new accounts or free Outlook.com accounts have stricter limits until credibility is established.

When Outlook sees a lot of bulk sending from a new account, especially to recipients who haven’t interacted with you before, it may flag this as potential spam and block the message. This is common right after migration because the system notices a sudden spike in activity.

Upgrading to Microsoft 365 will raise your limits significantly, but keep in mind that new accounts still start with temporary restrictions. These will ease as your account gains trust.

I hope this clears things up. Let me know how it goes!

Kind regards,

Edward