Inbox Monster vs Mailinator
Inbox Monster
inboxmonster.com
Mailinator
mailinator.comSide by side
| Figure | Inbox Monster | Mailinator |
|---|---|---|
| Price from | $312.50/mo | $79/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Android | — | Yes |
| API | — | Yes |
| Plans published | 5 | 13 |
| Spec score · Email Testing Software | 7.6 (#20) | 9.0 (#3) |
| Headquarters | United States | Ann Arbor, Michigan, USA |
| Integrations | Documented integrations include Salesforce Marketing Cloud, Braze, Iterable, SparkPost, Twilio SendGrid and Amazon SES. | Inbound webhooks can accept HTTP POST messages from sources such as alert systems, Zapier, or Twilio and apply configured rules. |
| Purpose | Inbox Monster provides tooling for creative rendering, inbox intelligence and email deliverability for global email teams. | Mailinator provides temporary inboxes and email and SMS workflow testing for developers, QA teams, and businesses. |
| Security controls | The Trust Center lists audit logging, data security, multifactor authentication, penetration testing and encryption-at-rest documentation. | Mailinator states that traffic is HTTPS-only, servers are firewalled and Cloudflare-proxied, and production is separated from development and testing environments. |
| SMS testing | SMS testing covers United States and Canada carriers and includes lock-screen, list-view and message-view previews for iOS and Android. | The platform accepts SMS messages for testing workflows such as one-time passcodes. |
Plans
Inbox Monster
- 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
Mailinator
- Public - FreeFree
- Public - FreeFree
- Verified ProFree
- Verified ProFree
- Business$79 a month
- Business (annual)$79 a month
- Business$99 a month
- Business Plus$159 a month
- Business Plus (annual)$159 a month
- Business Plus$199 a month
In their own words
Inbox Monster
Inbox Monster has no write-up on Specifiction yet; its figures are above.
Mailinator
Mailinator provides temporary inboxes and tools for testing email and SMS workflows. Developers, QA teams, and businesses can use it to check delivery for OTP, MFA, onboarding, password recovery, and other email processes at scale. Paid subscriptions include private testing domains, where messages can arrive at any address without creating an inbox first. The REST API retrieves inboxes, messages, and SMS, injects messages, and connects with CI/CD pipelines. Inbound webhooks can accept HTTP POST messages from sources such as alert systems, Zapier, or Twilio, then apply configured rules. SMS can be routed to an inbox or API for automated OTP and 2FA testing. The free public inboxes are readable by anyone, and messages typically auto-delete after several hours. Mailinator is receive-only: it cannot send email or fill out forms. The Public - Free plan is free to use without sign-up. Business costs $79 a month billed yearly; a two-week Business trial is listed. Other plans include Verified Pro at free, Business Plus at $159 a month billed yearly, and Enterprise at a price agreed with the maker with custom pricing.