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Fri, Feb 21, 2020 9:56 PM

limits on number of emails address supported in blind copy

I am using outlook 2010 as my email app. on I need to send one email to 160 recipients under blind copy (bcc). There appears to be a limit to the number of emails that supports (help desk says 15 to 30 they dont know for sure). Does anyone know how to get around this problem?


Brand User



111.6K Messages

a month ago

@sluis, You can send a maximum of 300 emails/hour. When sending each email, you can have up to 100 recipients per email, with a maximum of 50 recipients with the same domain.


AT&T has implemented a limit to the number of group message participants as a way to protect our customers from spam and/or malicious software.


AT&T is vigilant about protecting you, our customers, from unsolicited text message spam. 


AT&T has the authority to mark your email ID as spam at its discretion, so these limits are just what are possible but are not the final governing guide lines.


If you have any additional concerns, please feel free to reach out to us. Thank you for contacting us on AT&T Community Forums!

Lafayette, AT&T Community Specialist

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