No. Total Access Emailer does not limit the number of email messages that can be sent at one time. Your list of emails can be an unlimited number of records in your table or query.
However, there may be limitations beyond Total Access Emailer. Sending a large number of email messages in a short period of time may overload your mail server or affect network performance. Additionally, your mail server may be configured to limit the number or size of emails that can be sent in a particular period of time.
To prevent these problems, Total Access Emailer includes options to pause between messages to slow it down. This may be important if you are sending many emails, large messages, large graphics, and/or attachments. Refer to the "Send Options" topic in the help file for additional information.