The Mailosaur alternative with a free plan.
Same test loop: send to a sandbox address, wait for the email, assert on it. Start free instead of on a trial, and give the whole team separate inboxes for less than one Mailosaur seat.
- No credit card needed
- EU-hosted
- Plain SMTP, any language
- free plan with no time limit
- $0 vs trial
- 5 teammates with separate inboxes
- $12 vs $62.50
- client screenshots in the plan
- Yes vs add-on
- official MCP server for agents
- Hosted vs DIY
What you get for less
A sandbox per environment, a login per teammate
Mailosaur's Personal plan is one user and one inbox; separate inboxes start on Core at $62.50 a month. Mailloop Basic is $12 for 5 sandboxes, 5 members and 2,000 emails, and there is no daily cap to hit on a busy CI day.
Waiting for an email with Mailloop
import { MailloopClient } from '@mailloop/sdk';
const client = new MailloopClient({
apiKey: process.env.MAILLOOP_API_KEY,
});
const email = await client.emails.waitFor(sandboxId, {
to: '[email protected]',
timeout: 20_000,
});Waiting for an email with Mailosaur
const MailosaurClient = require('mailosaur');
const mailosaur = new MailosaurClient('YOUR_API_KEY_HERE');
const email = await mailosaur.messages.get(
'SERVER_ID',
{ sentTo: 'anything@SERVER_ID.mailosaur.net' },
{ timeout: 20000 }
);Client screenshots in the plan, not an add-on
Render a captured email in Gmail, Outlook, Apple Mail and more, light and dark, from the dashboard, the API or your agent. Gmail web is on the free plan and every client from $12. On Mailosaur, previews are an add-on to the Core plan.
An official MCP server, signed in with OAuth
Claude Code, Cursor, claude.ai and ChatGPT connect to Mailloop's hosted MCP server through the browser. The agent creates a sandbox, waits for the email and reads its links, with no API key in a config file.
Run the password reset flow on staging and check the email.
The reset email arrived and its link works.
Mailosaur vs Mailloop
 Mailloop | Mailosaur | |
|---|---|---|
| Plans | ||
| Free plan | Yes: 500 emails a month, no time limit | No: 14-day trial |
| Entry plan | Yes: $12: 5 sandboxes, 5 members | Partly: $25: 1 inbox, 1 user |
| Limit style | Yes: Monthly volume, no daily cap | Partly: Daily limit per plan |
| Testing | ||
| Wait for an email in a test | Yes: waitFor, up to 60 s on the server | Yes: messages.get, 10 s by default |
| Capture over SMTP | Yes: Any recipient, per sandbox credentials | Yes: SMTP per inbox |
| Screenshots in email clients | Yes: Every plan, Gmail web on Free | Partly: Core add-on, real devices |
| Throwaway sandboxes | Yes: Created by a test, deleted on their own | Partly: Unlimited addresses per inbox |
| SMS testing | No: Email only | Yes: Core add-on |
| Agents and SDKs | ||
| MCP server | Yes: Official, hosted, OAuth | Partly: Community, local, API key |
| Client libraries | Partly: TypeScript SDK, REST for the rest | Yes: Eight languages and Cypress |
Mailosaur facts checked on September 26, 2026 against mailosaur.com/pricing, its Node.js docs and security page. Prices on monthly billing. Mailloop numbers come from our pricing page.
Seen something inaccurate? Tell usWhen to stay on Mailosaur.
Mailosaur is built for QA departments with a test budget. If these describe your team, it is the better fit, and Mailloop will not pretend otherwise.
Stay on Mailosaur for
- SMS and one-time passcodes by text
- Java, .NET or Go client libraries
- Previews from physical devices
- ISO 27001 and SSO for procurement
Pick Mailloop for
- A free plan and small-team pricing
- Screenshots without an add-on
- Coding agents in the test loop
- No daily cap on busy CI days
Mailosaur and Mailloop, common questions
Looking at API-first tools too? See Mailloop vs MailSlurp and Mailloop vs Mailisk.
Does Mailosaur have a free plan?
How much does Mailosaur cost for a small team?
Can I keep my test structure when I move from Mailosaur?
Does Mailloop test SMS or one-time passcodes by text?
Is there a Mailosaur MCP server?
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