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I have been sending for many years a daily message to a group of 199 names. Yesterday, the group was rejected for "too many addresses". I broke the group into 4 groups with 50 names. The message is still bounced back. How do I fix?

  • This may be related to the anti-spam measures announced by Google the other day along with their new postmaster tools. – ale Jul 10 '15 at 20:30
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    A solution might be to create a google group. – aparente001 Jul 11 '15 at 23:51
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From Message bounced due to sending limit - Gmail Help

Are you a Google Apps customer? Find out more about Google for Work sending limits or SMTP relay service sending limits.

In an effort to fight spam and prevent abuse, Google will temporarily disable your account if you send messages to more than 500 recipients or if you send a large number of undeliverable messages. If you use a POP or IMAP client (for example: Microsoft Outlook or Apple Mail), you may only send a message to 100 people at a time. Your account should be re-enabled within 24 hours.

If you communicate with the same group of people on a regular basis, you might be interested in Google Groups.

If you send a large number of undeliverable messages, we suggest verifying your contacts' email addresses. It's also important that everyone you are sending mail to is willing to receive it.

Learn more about best practices for sending a large amount of mail through Gmail.

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