Sending Limits External and Internal 300 messages and 30 Messages Per Minute?

Greetings,

Re: Outlook sending limits

I want to report back on the clarification I have received from Microsoft support.

Sending an email to global distribution list created in the O365 Tenant / Active Directory is considered a single recipient.
Sending an email to a personal distribution list created in a user’s contact list – is the aggregate of the recipients contained within.


• Sending Limits External and Internal 300 messages and 30 Messages Per Minute? Yes

• When a user sends more than 300 external emails in a day-They will be blocked. Is this correct? Yes

• When a user sends more than 300 emails to internal recipients within their tenant in a day-They will be blocked. Is this correct? Yes

• If the aggregate of internal and external emails exceeds 300 in a day -The user will be blocked from sending. Is this correct? Yes

• When a user sends more than 30 messages within one minute to internal recipients within their tenant - individual users- They will be blocked and will need to resend. Is this correct? Yes

• When a user sends more than 30 messages within one minute to external recipients: - They will be blocked and will need to resend. Is this correct? Yes

• If the aggregate of internal and external emails exceeds 30 messages within one minute -The user will be blocked and the messages will need to be resent. Is this correct? Yes
I hope this adds clarification.