Email infrastructure that treats you like a partner.

Predictable pricing, responsible senders, thoughtful incident response, and the tools to understand and protect every message.

01 / Predictable pricing

No more surprise bills.

Choose a monthly plan for each sending environment, sized for your busiest hour and the rolling 24 hours. See the hourly and 24-hour limits and monthly cluster price before you join.

Explore capacity pricing

02 / Responsible network

We know who sends with us.

Every customer needs production approval before sending to external recipients. After invitation and signup, you can test with your team while we review your account. Reviewing senders helps protect the shared sending environment.

03 / Human incident response

We isolate the problem, not your business.

We investigate incidents with context. When a problem can be contained to a sending domain, we focus the response there and work with you on recovery.

We can pause an affected domain and help you understand the cause. Account-wide abuse or compromise may require a broader pause to protect your customers and the network.

  1. ISSUE FOUND

    The affected sending domain is identified.

  2. DOMAIN PAUSED

    We pause the affected domain when the issue can be contained there.

  3. WORK TOGETHER

    We help you rectify the cause and restore sending.

04 / Clear answers

See why an email did not arrive.

Follow what happened to every message with detailed events and practical diagnostics. When mail is not reaching a customer, you have the context and tools to act.

See message events

05 / Built-in protection

Guardrails before send.

PostShiba's email firewall lets you block recipients before sending. Combine configurable rules, suppressions, and tenant controls to reduce unwanted mail and investigate abuse.

Explore protection tools

Ready for email infrastructure that works with you?

PostShiba is in private beta.

About

PostShiba is the email platform that powers Bento behind the scenes. You can build your own products, like Bento, on top of it.

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