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1. Yes, there are some limitations for the number of email messages an individual user can send
2. For more information, visit Google's website

3. The following limits apply:

   Limit Type	Description	Limit
   Messages per day	Daily sending limit (both internal and external)	2,000 (500 for trial accounts)
   Messages auto-forwarded	Messages automatically forwarded from another account; not included in the daily sending limit	10,000
   Auto-forward mail filters	Account filters that automatically forward mail	20
   Recipients per message	Addresses in the To, Cc, and Bcc fields of a single email (both internal and external)	2,000 (500 external)
   Recipients per message (sent via SMTP, POP, or IMAP users)	Addresses in the To, Cc, and Bcc fields of a single email (both internal and external)	99100
   Total recipients per day	Individual addresses count in every mail sent; 5 emails sent to 10 addresses count as 50 recipients (both internal and external)	10,000
   External recipients per day	Email addresses outside your primary domain, including domain aliases and alternate domains	3,000
   Unique recipients per day	Individual addresses count once a day; 5 emails sent to 10 addresses count as 10 unique recipients (both internal and external)	3,000 (2,000 external, 500 external for trial accounts)

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