Inbox Monster
6.0#17 in email testing softwareFrom $3,750 a yearWeb
VisitInbox Monster vs MailSlurp
What both publish
| Fact | Inbox Monster | MailSlurp |
|---|---|---|
| Headquarters | United States | Saue, Harjumaa, Estonia |
| Integrations | Documented integrations include Salesforce Marketing Cloud, Braze, Iterable, SparkPost, Twilio SendGrid and Amazon SES. | The integrations directory lists 79 items, including SDKs, Playwright, Cypress, Selenium, BrowserStack, Zapier, Power Automate, UiPath, Postman, GraphQL and webhooks. |
| Security controls | The Trust Center lists audit logging, data security, multifactor authentication, penetration testing and encryption-at-rest documentation. | The security policy states TLS in transit, AES-256 encryption at rest, AWS RDS/S3 storage, daily backups, VPNs, network ACLs, penetration testing and RBAC. |
Inbox Monster plans
- Essential (Creative suite)$3,750 a year
- SMS suite$6,000 a year
- Advanced (Creative suite)$6,500 a year
- Enterprise (Creative suite)$10,000 a year
- Deliverability suite$15,000 a year
MailSlurp plans
- FreeFree
- Starter$19.99 a month
- Pro$49.99 a month
- Growth$129.99 a month
- EnterprisePriced on request
Pick Inbox Monster if…
It suits global email teams needing creative previews, quality assurance, deliverability, reputation, or SMS testing. Web access, API access, and documented marketing-platform integrations support technical workflows.
Pick MailSlurp if…
It suits developers building email or SMS workflows and teams testing message delivery, inbox placement, or application flows. Teams handling email and attachment data may also find the JSON extraction tool relevant.