Yes, you have to pay a subscription fee of $60 per year (equivalent to $5 per month) for each brand you create and use in MailBluster if you are under Pro plan. In MailBluster, each Brand represents an individual organization or company or a product brand.
Currently, there are two plans available in MailBluster: Starter and Pro. The Starter plan allows you to send 3,000 free emails (one time only) across all your brands you have created earlier. If you exceed this limit, you will be requested to upgrade to Pro plan. Once you switch to Pro plan, a subscription fee of $60 per year which is equivalent to $5 per month is deducted from your billing card for each brand. Additional $0.60 will be charged at the end of each month for every 1000 emails you sent from each of your Brand. Under Pro plan, you will be able to use any upcoming special features as well as Automation, custom fields, Pro templates, lead and report exporting, removal of MailBluster branding, and more.
For further details, please visit the MailBluster Pricing page and MailBluster My Plan after signup. You can also check out the pricing calculator in homepage to estimate your monthly costs.
Please Note: Both plans require a verified, approved, and out-of-sandbox AWS account to MailBluster