Account Quotas and Limits

Mailofly enforces quotas to ensure infrastructure stability, protect IP reputations, and prevent accidental burst sending.

Plan Quotas

Monthly public catalog checked November 3, 2026. Workspace entitlements and the pricing page determine your current allowance. Marketing contact plans are separate.

Transactional plan	Monthly price	Included monthly emails
Free	$0	3,000
Pro 50K	$20	50,000
Pro 100K	$29	100,000
Scale 100K	$75	100,000
Scale higher volumes	See current pricing	200,000–2,500,000
Enterprise	By agreement	By agreement

Free has a 100-email daily workspace limit. API request rates and provider restrictions are separate from monthly email allowances. Dedicated IP arrangements are not implied by the volumes above.

Handling Over-Quota Requests

Rate Limit (HTTP 429): If your application exceeds the per-second API burst rate, Mailofly returns a 429 Too Many Requests header with a Retry-After timestamp. Use an exponential backoff retry mechanism.
Monthly Quota Exceeded: You will receive email notifications when you reach 80% and 100% of your plan allowance. You can enable automatic overage protection in Billing Settings to avoid delivery interruption.