Disposable inboxes
Per run
Generate unique email addresses for clean fixtures and parallel-safe execution.
Make Tosca email validation repeatable with real inboxes and evidence
MailSlurp provisions disposable inboxes and provides deterministic wait helpers so Tosca suites can validate sign-up, password reset, and MFA email steps without shared mailboxes or manual inbox checks.
Works with your QA stack
Trusted by teams at
Used by engineering, QA, lifecycle, and operations teams building and testing email and SMS workflows.
Deterministic waits
Release gates
Wait for matching emails and extract links or OTP codes without flaky sleeps.
Payload evidence
Actionable failures
Capture headers, bodies, and attachments as evidence for change control and audits.
Enterprise-ready
Scale coverage
Upgrade for volume, retention, and team workflows as your QA program grows.
Core capabilities
Tosca integration capabilities teams can act on
Provision inboxes on demand for isolated runs
Create real inboxes per workflow so Tosca runs always have clean, unique user identities.
- Disposable inboxes
- Parallel-safe
- Clean fixtures
Wait for emails and extract OTP codes or links
Use deterministic wait helpers to find the right message and parse codes, anchors, and links reliably.
- OTP codes
- Magic links
- Reset links
Assert on HTML, attachments, and headers
Validate templates, links, headers, and attachments to improve release confidence.
- HTML parsing
- Attachments
- Header checks
Standardize evidence for stakeholders
Store evidence for failed gates and reduce time-to-diagnosis with clear payload visibility.
- Evidence
- Governance
- Faster diagnosis
Team use cases
Ways teams use MailSlurp for Tosca integration
QA automation engineers
Verify onboarding and authentication emails in Tosca
Test the full customer journey by asserting on real inbox messages in your suite.
- Capture verification links and OTP codes
- Reduce flaky failures from timing and shared inboxes
- Prove onboarding flows before release
Platform and DevEx teams
Standardize email validation across squads
Create reusable patterns for inbox provisioning, waits, and content validation.
- Enable parallel runs without mailbox collisions
- Reduce test glue across teams
- Create a consistent playbook for debugging failures
Release managers
Gate releases with evidence
Convert manual spot checks into regression gates with clear evidence when workflows fail.
- Catch broken templates before customers do
- Shorten incident response with payload evidence
- Increase confidence in staged releases
Start testing
Start previewing customer emails quickly
Day 1
Add one inbox validation to a critical workflow
Start with a single workflow and validate email receipt plus one key assertion.
- Create a disposable inbox during the run
- Trigger a workflow email from the app
- Wait for the email and extract the code or link
Week 1
Make evidence consistent in CI
Turn the workflow into a reusable pattern and store evidence for failures.
- Provision inboxes per runner to avoid collisions
- Store payload evidence when gates fail
- Add assertions for HTML, headers, and attachments
Week 2+
Scale and standardize
Expand patterns to more workflows and standardize how failures are investigated.
- Create shared helpers for inbox and wait logic
- Add monitoring around workflow failures
- Upgrade for higher volume, retention, and team access
Customer use cases
Where MailSlurp helps
Enterprise release stakeholders
Challenge: Critical messaging workflows fail without clear evidence or repeatable QA gates.
What improves: Turn email workflows into regression gates with payload evidence.
Teams running parallel CI
Challenge: Shared inboxes and time-based sleeps cause flaky tests and non-deterministic failures.
What improves: Use disposable inboxes and deterministic waits to keep suites reliable under load.
QA teams scaling coverage
Challenge: Manual inbox checks and shared mailboxes do not scale with coverage growth.
What improves: Automate inbox validation and standardize patterns across teams.
Better email releases
What gets easier before send time
Less flakiness
Replace sleeps and shared mailboxes with deterministic waits and isolation.
Faster diagnosis
Inspect email payloads, links, headers, and attachments when tests fail.
Parallel-safe
Run many workflows without mailbox collisions or fragile cleanup logic.
Clear upgrade path
Start free, then scale volume, retention, and team access as programs expand.
Ready to test your next email?
FAQ
Common questions before starting
Can we run these checks in parallel?
Yes. Provision inboxes per runner or per run so messages never collide across parallel builds.
Can we test password reset and account verification flows?
Yes. Teams commonly assert on OTP codes, magic links, and reset links in sign-up and auth workflows.
Can we parse HTML and download attachments?
Yes. You can fetch HTML/text bodies, headers, and attachments to validate real customer content.
Do you support team workflows?
Yes. Upgrade for retention, governance, and team access as your QA program scales.