Unable to send messages to multiple email addresses
Hello Zoho Team,
due to changes in our company's policies, some announcements will need to be sent to multiple customers (up to 100) via email.
The following error is returned during the current test:
Unable to send message; Reason:550 5.4.6 Unusual sending activity detected. Please try after sometime
Use email: cs4@zftech1.com
Please provide a solution or suggestion to solve this problem.
Thank you.
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