MailBluster daily email sending capacity depends on the sending method you use.
If you use an external SMTP provider such as Amazon SES, Postmark, Mailgun, or SMTP2GO, MailBluster does not set a daily sending limit. Your SMTP provider determines your daily sending capacity.
If you use MailBluster SMTP, there is no separate daily sending limit. Your sending limit is based on your monthly MailBluster SMTP plan. For example, if you purchase a plan for 10,000 emails per month, you can send those 10,000 emails anytime during that month, even all in a single day. If you send all 10,000 in one day, your included monthly email allowance will be used up for that month.