AI credits are the currency for all Mumara AI features — every message you send in the AI Builder deducts credits from your balance. The rate is $1.00 USD = 1,000 credits, so a typical full HTML email on the Balanced tier (10–20 credits) costs roughly a cent or two at base rate. Every Mumara license includes free credits to get started, and your current balance is always visible in the AI Credits badge in the top-right of the AI Builder.
What a request costs depends on four things: the tier selected (Advanced costs far more than Balanced, which costs more than Fast), your prompt length, the response length, and how long the conversation has grown — longer chats include more context, so each message gets pricier. Typical ranges run from 1–2 credits for subject lines on Fast up to 50–120 for complex multi-section emails on Advanced. Administrators may also apply a credit markup (default 50%) on top of base costs.
When credits run out, AI requests fail with an "Insufficient credits" message, but everything else in Mumara keeps working, and your saved conversations and emails are preserved. Administrators can top up via Settings → AI Settings → Purchase Credits (presets from $5 to $500 or a custom amount, added instantly) or through the Mumara Billing Panel; regular users should contact their administrator.
To stretch your credits: write detailed first prompts, pick the right tier, request specific tweaks instead of rewrites, and start fresh conversations for new emails.