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How to send email to more than 500 recipients outlook...
Microsoft 365 - Email/Calendar Maximum Recipient Limits
What happens if I send more than my daily limit?
If you exceed your daily email sending limit you will receive a bounce back message that will contain the following error message: You will be blocked from sending additional messages until the next day.
There is no way for the Help Desk or the Microsoft 365 team to unblock your account.
How do I unblock my account?
Once you have exceeded your daily sending limit you will need to wait until the next day to send email.
This is a Microsoft limitation and there is no way to unblock your account.
What counts against my sending limit?
- Email: Each recipient listed in the To:, Cc: or Bcc: fields of emails you send counts towards your sending limit.
- Calendar Invites: Each recipient of a calendar invite that you create counts towards your email sending limit
- Send As: Messages you send using the Send As feature count toward your account and not the account the From address is assigned to.
- Send on Behalf: Messages you send using Send on Behalf of permissions count tow
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