Simple pricing
Pick a subscription for features, then pay as you go for usage.

Starter
Personal use

Pro
Production scale

Growth
Team support

Enterprise
Secure & compliant
Simple metered usage
Base plans unlock features. Add-ons price volume, seats, domains, and channels.
Add-ons
| Add-on | Description | Price |
|---|---|---|
| Storage | Extra retained email and attachment storage. | From $0.75 / 1 GB / month |
| Inbox creation | New inboxes after the base plan allocation. | From $3.00 / 1,000 inboxes |
| Email receive | Inbound email volume for live addresses and tests. | From $0.99 / 1,000 emails |
| Email send | Outbound email volume for automation and delivery. | From $0.99 / 1,000 emails |
| User seats | Extra people on shared workspaces. | Speak to sales |
| Domains | Extra custom sending and receiving domains. | Speak to sales |
| AI tokens | Token usage for AI extraction and transforms. | From $1.00 / 10,000 tokens |
| Email verification | Address checks before send. | From $0.01 / 1 checks |
| Inbox placement test | Inbox, spam, and promotions placement checks. | From $1.00 / 1 placement token |
| Device rendering | Client render previews and screenshot runs. | From $0.50 / 1 render token |
| Connector sync | External inbox sync runs. | From $3.00 / 1,000 syncs |
| Domain monitor | Recurring domain health and DNS monitoring. | From $3.00 / 1,000 runs |
Phone and SMS
Monthly phone rental plus inbound and outbound SMS.
| Country + variant | Phone price | SMS in | SMS out |
|---|
Compare plans
Feature Monthly Annually | ![]() Starter From $19.99 / month | ![]() Pro From $69.00 / month | ![]() Growth From $129.99 / month | ![]() Enterprise Custom |
|---|---|---|---|---|
| Inbox and email | ||||
Permanent inboxesKeep inboxes active for reusable workflows. | Yes | Yes | Yes | Yes |
Total inboxesMaximum inboxes that can exist at one time. | 5 | 100 | Unlimited | Unlimited |
Max email sizeLargest supported message size per email. | 5 MB | 10 MB | 50 MB | 50 MB |
| Sending and domains | ||||
External sendingSend outside MailSlurp-owned inboxes and domains. | No | Yes | Yes | Yes |
Custom domainsBring your own sending and receiving domains. | No | No | Yes | Yes |
Connected Gmail inboxesMaximum Gmail inbox connections available by plan. | - | - | 5 | Unlimited |
AttachmentsReceive and manage email attachments. | No | Yes | Yes | Yes |
WebhooksSend real-time events into your own services. | No | Yes | Yes | Yes |
Email auditCheck content quality before send. | No | Yes | Yes | Yes |
| Teams and governance | ||||
OrganizationsShared account spaces for team workflows. | - | - | 1 | 5 |
User seatsAdd teammates and shared access seats. | No | No | Yes | Yes |
RBAC permissionsControl access with roles and permissions. | No | No | No | Yes |
Multiple environmentsSeparate environments for delivery and account control. | No | No | No | Yes |
Audit logsTrack account activity and workspace events. | No | No | No | Yes |
SAML / SSOUse your own identity provider for sign-on. | No | No | No | Yes |
| Monitoring and quality | ||||
Device previewsPreview rendering across major email clients. | No | Yes | Yes | Yes |
Load testsRun delivery and reliability checks before launch. | Yes | Yes | Yes | Yes |
Domain monitoringMonitor domain health, DNS, and reputation signals. | No | No | Yes | Yes |
Campaign probeRun preflight campaign checks before rollout. | No | No | Yes | Yes |
| AI and channels | ||||
Connect GmailConnect Gmail inboxes into MailSlurp workflows. | No | No | Yes | Yes |
AI transformersTurn messages and attachments into structured outputs. | No | Yes | Yes | Yes |
Google Sheets outputsSend AI extraction output straight into Sheets. | No | No | Yes | Yes |
Phone numbersProvision phone numbers and SMS workflows. | - | Unlimited | Unlimited | Unlimited |
Included support scope
- SAML SSO, user roles + permissions
- Audit logging & environments
- Regional hosting
- Custom MSA, legal, procurement
- Priority onboarding and escalation paths
Frequently asked questions
Answers for technical and procurement buyers
How does pricing work?
Choose a base plan for feature access, then add usage as needed. Base plans unlock capabilities. Add-ons and usage pricing cover things like inbox volume, email volume, seats, domains, phone numbers, SMS, validation, and storage.
Which plan should I start with?
Starter is for non-commercial evaluation. Pro is the normal starting point for production automation. Growth is for teams that need shared workspaces, domains, and higher operational limits. Enterprise is for procurement, security review, and custom rollout requirements.
Is Starter for commercial use?
No. Starter is a non-commercial plan for testing, evaluation, and lightweight personal use. If you are using MailSlurp for business, client work, or production operations, start on Pro or above.
Which plans can start with a trial?
Trials depend on the current catalog and account eligibility. On the public pricing page, any plan marked Start trial supports a trial for new eligible customers. Trial eligibility can still be removed at checkout if the account or payment method has already used a trial.
What is billed separately?
Usage-based pricing applies to variable parts of the platform such as inbox creation, email send and receive volume, storage, seats, domains, AI usage, validation, phone number rental, and SMS. The pricing tables below show which items are billed separately from the base plan.
What happens when we hit a limit?
It depends on the limit. Some limits can be expanded by add-ons or usage billing. Some feature-gated products require the right plan first. For self-serve plans, the app will usually route you to the next plan or add-on path when you hit a relevant limit.
How does yearly billing work?
Yearly billing keeps the same plan features but charges annually at a lower effective monthly rate. The pricing header shows the current maximum savings available across self-serve plans.
How do phone numbers and SMS pricing work?
Phone pricing is separate from the base plan. Numbers are rented monthly by country and variant, and SMS is billed by message. Outbound SMS pricing varies by reply multiplier, so SMS out can cost more than SMS in for some regions.
Can we use MailSlurp in CI/CD and production workflows?
Yes. MailSlurp is built for automated test pipelines, staging environments, and production-adjacent validation workflows. Teams commonly use it for signup flows, OTP, password reset, notifications, deliverability checks, and mailbox automation.
Do you offer support packages?
Yes. Enterprise customers can get custom onboarding and support options tailored to rollout, procurement, and ongoing operational needs.
How are upgrades, procurement, and enterprise plans handled?
Self-serve customers can change plans and add supported products in-app. Enterprise goes through sales. That path is used for invoicing, security review, procurement, rollout planning, SAML SSO, audit requirements, regional hosting, and custom terms.
Need help deciding
Talk to the sales team
Share expected monthly volume, channels, and compliance needs. We can recommend a plan and rollout path for your use case.
Typical topics
- + Plan sizing for expected monthly traffic
- + Security and compliance requirements
- + Rollout strategy for QA and production
- + Custom procurement and billing paths