Transactional Email API Service For Developers
APIFree plan available
- Send emails
- Optimize emails
- Validate emails
Best PostShiba Alternatives in 2026
4 similar tools you can use instead of PostShiba, with pricing and key features.
PostShiba
Email infrastructure for platforms
APIFrom $0.50 / GB-month
- Sending API & SDKs
- Inbound/outbound mail & webhooks
- Cluster provisioning & inbox management
- Delivery diagnostics & capacity pricing
PostShiba alternatives
Self-hosted Resend alternative
Developer toolsFrom $149 / one-time paymentSelf-hosted
- Campaigns
- Sequences
- Transactional API
Email for developers
APIFree plan available
- Modular Webhooks
- Test Mode
- Editor
SendGrid Email API and Email Marketing Campaigns
API
- Email API & SMTP
- Email campaigns
- Deliverability tooling
Frequently Asked Questions
What is PostShiba?
PostShiba is an API tool: Email infrastructure for platforms. Paid plans start from $0.50 / GB-month. Key features include Sending API & SDKs, Inbound/outbound mail & webhooks, Cluster provisioning & inbox management and Delivery diagnostics & capacity pricing.
Which PostShiba alternatives are paid-only?
Maillayer: From $149 / one-time payment.
Which PostShiba alternative can I self-host?
Maillayer can be self-hosted.