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for Enterprise

We support hundreds of Quality Assurance teams with integrated email testing workflows. Teams rely on Mailsac during the SDLC build and testing phases. They verify signup flows, email notifications, and bulk email blasts are reliable and correct.

Automate email QA without the hassle of configuring SMTP or DNS.

Stop having to worry about public open relays, complicated SMTP testing workflows, or insecure email hacks.

Developers can send and receive private email over SMTP, HTTP/JSON, WebHooks, and Web Sockets.

Ready to meet the needs of large organizations

Powered by AWS

We run a secure, documented and scalable system on AWS using best practices in networking security, encryption, and devops.

Enterprise Billing


Purchase Orders

ACH Payments

Consolidated Multi-Account Billing

Available through value added resellers (SHI and SoftwareOne)

Security & Privacy

Vendor Due Diligence

We're ready to help complete your SIG Risk Assessment, CyberGRX questionnaire, or other vendor evaluation process.

Access to Mailsac Security Documentation

Download our Information Assurance Policies and Procedures with evidence.

View 3rd party audit results.

Limited Access

Individual developers can use API keys instead of account and billing logins. Track usage by API key, domain, and enhanced address.

Single Sign-On

Mailsac has support for SAML-based SSO.

Human Support

Dedicated Account Executive

API integration, DNS configuration, and coding assistance.

Cost Effective

Much Lower TCO vs Self-Hosted SMTP

Developers can be up-and-running in minutes or hours, instead of days or weeks, due to zero-config SMTP setup solutions. Or add two DNS records to use your own domain.

All-Inclusive billing

Know your bill ahead of time. No surprise usage overages.

Over a Decade of Experience

Mailsac has specialized in email testing integrations for over 10 years. Leverage our optimizations and learnings, instead of rolling-your-own.

Enterprise Pricing

Cloud Hosted

plus $24 per year
per user
Equivalent of $295/mo
plus $2/mo per seat

Dedicated Instance

Equivalent of $560/mo

Support via Email

Included in all plans
Most issues are resolved via email

Support via Phone or Video

4 hour blocks
First 2 hours per year are free

All enterprise plans include 2 hours of technical phone support per year.

All prices USD. Yearly billing only. Custom plan limits may be extra.

Start a conversation today