- Starting price
- $0.50GB-month
- Website
- postshiba.com
About PostShiba
PostShiba is an email infrastructure platform designed for developers and SaaS platforms that send on behalf of their customers. It offers sending controls, delivery diagnostics, and monthly capacity pricing from the team behind Bento, so teams can focus on building products.
Key Features
In practice, it exposes a programmable API and a managed sending stack that handles domains, inbound replies, and per-tenant workflows:
Sending API & SDKs
Programmatic email sending from your app with from, to, reply_to, subject, text/html, and custom args; examples use the @postshiba/node SDK.
Inbound/outbound mail & webhooks
A cluster with an inbox for customer replies; replies post to your webhook; SMTP endpoint is smtp.postshiba.com and inbound domain is inbound.postshiba.com.
Cluster provisioning & inbox management
Create a cluster and inbox, then poll until provisioning completes; production view exposes MX, HTTP, and SMTP endpoints and a shared IP.
Delivery diagnostics & capacity pricing
Built-in deliverability checks and dashboards, plus monthly capacity pricing to scale with usage.
Summary
Best for: engineering teams at SaaS platforms, product teams handling transactional email, and startups needing predictable capacity-based pricing.
Pricing
View pricingPlans and prices as listed on postshiba.com as of Oct 15, 2026.
Inbox storage
$0.50 / GB-month
- Pay for the average stored over the month
Nano
$5 / month
- 100 emails / hour
Micro
$15 / month
- 4k emails / hour
Additional shared IPs
$15 / month
- Extra shared sending IP
Small
$49 / month
- 40k emails / hour
Additional dedicated IPs
$50 / month
- Exclusive sending IP
Medium
$99 / month
- 100k emails / hour
Large
$299 / month
- 200k emails / hour
XL
$599 / month
- 400k emails / hour
Burst
$1,499 / month
- 800k emails / hour
Enterprise BYOC
Custom / negotiable
- Run capsules in your cloud account
- Custom pricing
