Test, build, and automate

Yes. Free has no expiry date and does not require a credit card. It is a small development sandbox with monthly allowances for inbox creation, inbound email, standard device renders, inbox placement tests, and internal-only sending.

Free sending stays inside MailSlurp. You can send only to an exact sandbox inbox owned by the same account; external recipients, aliases, CC, BCC, forwarding, and other egress paths are blocked. Choose a paid plan when you need controlled delivery to public addresses.

Pro is the straightforward starting point for an individual building production email tests. Team adds shared access, larger included allowances, and usage-based growth. Enterprise adds negotiated capacity, identity, compliance, procurement, and support controls.

A capped allowance stops at the displayed limit instead of creating an unexpected usage charge. Free and Pro use caps for core inbox and email usage. Where Team or Enterprise can continue with metered usage, the price after the included amount is shown directly in the comparison table.

Eligible Pro and Team customers can start a card-backed trial from the pricing page. Eligibility is checked before checkout. If an account, payment method, or plan is not eligible, MailSlurp explains that directly instead of silently changing the request into an immediate paid checkout.

An Agent is one active MailSlurp connection created with an agent API key or an OAuth/MCP authorization. Both connection types share the plan allowance. Disabled connections do not consume an active slot, and existing legacy subscriptions keep their previously saved entitlement.

The plan cards and comparison table show each included allowance. Pro keeps core usage predictable with caps while specialist tools such as extra renders, placement tests, verification, AI, domains, and phones can be billed separately. Team includes larger core allowances and shows the price that applies after each included amount.

Phone products are separate from the base plan and available only on supported paid plans. Number rental is billed monthly by country and number type; received and sent SMS and MMS are billed per message at the rates in the phone table.

Routine renewals keep the limits already stored for an existing subscription. When a saved plan differs from the current public offer, the app identifies it as a Legacy plan so you can understand why its limits or pricing are different.

Yes. You can manage supported plan changes and cancellation from the billing area. The app shows the applicable schedule, trial status, and checkout terms before you confirm a change.

Enterprise combines custom usage and commercial terms with SAML or OIDC SSO, SCIM provisioning, role-based access, audit logs, environment isolation, security review, procurement support, and optional onboarding or support packages.