Is there a limit for Send Email Option (Individual)?

Is there a limit for Send Email Option (Individual)?

Hello,

I had 3 Zoho CRM accounts in the same organization. We send out emails to client daily.
Can anyone let me know that there is a limit for Send Email Option (Individual)?

Thanks,
--
Dung Nguyen Quoc (Mr.)
Director
Phoenix Software Co., Ltd
Hall 8, QT Software City, Tan Chanh Hiep Ward, Dis 12, HCMC, VN
Tel : +84 85 437 1160
Skype : nguyendung7983