MailSlurp's pricing page
Captured from mailslurp.com. Pricing changes often, so confirm the current numbers on the live page.
Buying shortcut
Which MailSlurp plan should you choose?
Start here
Free
Exploring email workflows, testing, and AI. It is the first tier to check when you only need the core MailSlurp workflow. Watch for: 100 inbox creations per month fixed cap
Public price
$0/mo
Free forever.
Main upgrade
Starter
Individuals running regular application and campaign tests. Inspect this tier when the lower tier starts blocking reporting, automation, collaboration, or support needs. Watch for: 250 inbox creations per month fixed cap
Public price
$19.99/mo
Regular email workflows and tests.
High-volume or advanced
Enterprise
Teams with procurement, SSO, audit, regional hosting, and SLA needs. Treat this as the serious-operations tier, especially if the first two plans leave key limits or add-ons unresolved. Watch for: Requires sales conversation
Public price
Custom
Security and compliance quote.
What MailSlurp costs at your size
The cheapest plan that covers each size, from MailSlurp's published pricing. Check the sources below for the date it was verified.
Cost scenarios
Pricing pages show the entry point. These scenarios show what the plan means in real buying situations.
QA team testing signup flows
MailSlurp: Pro or Growth is usually more relevant than Starter for commercial work.. Sequenzy: Not a QA mailbox automation product.. MailSlurp is better for email testing infrastructure.
Marketing team sending lifecycle email
MailSlurp: MailSlurp is the wrong category.. Sequenzy: Built for lifecycle campaign execution.. Sequenzy is the marketing tool.
Team adding many inboxes and send volume
MailSlurp: Base plan plus metered add-ons.. Sequenzy: More predictable for campaign work, but not mailbox testing.. Model add-ons carefully.
What to watch for
Starter is non-commercial.
Metered add-ons can materially change total cost.
MailSlurp is not a marketing automation platform.
Costs beyond the headline price
- Extra device renders, placement tests, and AI tokens beyond the included allowance continue with paid usage on Pro and Growth at the listed rates.
- Phone number rental and SMS messaging are charged separately, with rates varying by country and number type.
- Growth includes 2 users and 1 custom domain, so extra team seats, extra domains, and extra warm-up senders at $29 per sender per month raise the bill.
- Emails are counted per 256KB chunk of content, so large messages consume the allowance faster.
- Storage beyond the included cap moves to usage billing, and domain monitoring is a paid add-on from the first credit.
MailSlurp pricing is for technical workflows
MailSlurp is priced around inboxes, testing, automation, add-ons, and compliance. It is not trying to be a newsletter or lifecycle campaign platform.
The real cost depends on how many inboxes, tests, rendered previews, validation checks, AI transformations, and storage requirements your QA or engineering process creates. MailSlurp is valuable when email is part of automated testing or compliance workflows. It is not a good proxy for marketing campaign cost.
Use MailSlurp alternatives to compare technical email testing tools. Use Sequenzy vs MailSlurp when you need to explain why testing infrastructure and lifecycle marketing are different budget lines.
MailSlurp vs Sequenzy
MailSlurp belongs in the QA and email infrastructure bucket. Sequenzy belongs in the SaaS lifecycle marketing bucket.
MailSlurp vs Sequenzy
How MailSlurp compares with Sequenzy, which bills on emails sent rather than contact count.
How Sequenzy prices the same volume
Sequenzy price per 1k emails
$0.82 / 1k at $49/mo for 60k emails
Verdict
MailSlurp is a technical email testing and automation platform. Sequenzy is a SaaS lifecycle marketing platform, so the comparison mostly comes down to category fit.
FAQ
Sources checked · Oct 8, 2026