Email & SMS

Programmable email addressesUnlimited inboxes, custom domains, Gmail and Outlook.
Phone numbers & SMSReal numbers to receive texts and verification codes.

Application testing

End-to-end email & SMS testingTest signup, recovery and notification flows.
OTP & MFA testingCapture codes and complete authentication tests.
Load testingCheck message delivery as traffic grows.

Email quality

Device renderingPreview delivered email on real clients and devices.
Email AuditFind broken links, images and accessibility issues.
Inbox placement testingSee inbox, promotions and spam results.
Email warmupBuild sender reputation and reach more inboxes.
Domain monitoringTrack authentication, DNS and sender health.

AI & automation

Email & SMS for AI agentsGive agents accounts with scoped API and MCP access.
AI data extractionTurn emails and attachments into structured data.
Email & SMS pipelinesRoute messages, attachments and replies into your systems.

QA & development teamsTest signup, authentication and application notifications.
Email marketing teamsPreview, audit and check campaign placement before sending.
Deliverability teamsInvestigate inbox placement and sender health.
Automation buildersProcess incoming messages, attachments and replies.

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Email & SMS

Programmable email addresses
Phone numbers & SMS

Application testing

End-to-end email & SMS testing
OTP & MFA testing
Load testing

Email quality

Device rendering
Email Audit
Inbox placement testing
Email warmup
Domain monitoring

AI & automation

Email & SMS for AI agents
AI data extraction
Email & SMS pipelines

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Mailosaur Alternative guides and tutorials

2 practical MailSlurp resources

Posts

Alternatives To Mailosaur: MailSlurp for Email and SMS Test Automation

Use MailSlurp as the Mailosaur alternative for API-first inbox testing, SMS OTP checks, webhooks, parser workflows, and release-safe QA.

Read more technical

Maildoso alternative for programmable inboxes

Comparing Maildoso alternatives? Create private inboxes, send email, connect replies to your app and check inbox placement with MailSlurp.

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Deliverability SMTP Email Testing Testing Email Device Previews Inbox Placement Email Deliverability Dns Automation JavaScript Email Rendering Campaign Testing Email Parser Email API QA Campaign QA SMS Transactional Email DMARC Sender Reputation API Marketing Email Authentication

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The complete email and SMS toolkit.

Develop and test real messaging flows, preview emails on real devices, protect deliverability, and connect AI agents—all from one platform.

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Email & SMS

Programmable email addresses Phone numbers & SMS

Application testing

End-to-end email & SMS testing OTP & MFA testing Load testing

Email quality

Device rendering Email Audit Inbox placement testing Email warmup Domain monitoring

AI & automation

Email & SMS for AI agents AI data extraction Email & SMS pipelines

Resources

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