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What can I do if emails are returned or an error message occurs due to sending emails too frequently or exceeding the frequency threshold?

Last Updated: Feb 28, 2019

To ensure that you can properly and securely use the mailbox, Alibaba Mail places restrictions on the sending frequency and number of emails. The restrictions include how often and how many emails you can send every minute, every hour, and every day. If you exceed the threshold of these restrictions, you will be prompted by an error message or email sending will be rejected. The preceding restrictions on the frequency and number are confidential data of Alibaba Mail. They are not available to the general public.
If a sender uses Alibaba Mail Free, the email sending restrictions apply to all accounts in the domain in addition to the preceding limits applied to a single account.