What is the governor limit of sendEmail() to sent bulk email?

Hi Parul

If emails are sent via APEX you can only send 10 sendEmail() methods in one transaction. These APEX emails are usually sent from behind a Visualforce page or from a trigger.Of these emails sent via APEX there is a limit of 1000 single emails and 1000 mass emails per day to external addresses.If emails are sent via Workflow rules, then there is a limit of 1000 emails per day per Standard Salesforce license. So if you have 10 Salesforce licenses you can send out 10,000 emails in one day.You can send an unlimited number of emails to your internal users.

Hi,

Salesforce has different limits depending on how the emails are sent.
A) If emails are sent via APEX you can only send 10 sendEmail methods in one transaction. These APEX emails are usually sent from behind a Visualforce page or from a trigger. APEX Governor Limits
B) Of these emails sent via APEX there is a limit of 1000 single emails and 1000 mass emails per day to external addresses. APEX Governor Limits
C) If emails are sent via Workflow rules, then there is a limit of 1000 emails per day per Standard Salesforce license. So if you have 10 Salesforce licenses you can send out 10,000 emails in one day. Workflow Email Limits
D) You can send an unlimited number of emails to your internal users. APEX Governor Limits. This is very important to note.

Hope this helps.