Sitemap
Every public PostStack page, grouped by section. Also available as XML at /sitemap.xml.
Product
Feature pages, pricing, and integrations.
Documentation
API reference, concepts, and how-to guides.
- Introduction/docs/introduction
- Authentication/docs/authentication
- Emails/docs/emails
- Domains/docs/domains
- Contacts/docs/contacts
- Contact Properties/docs/contact-properties
- Templates/docs/templates
- Broadcasts/docs/broadcasts
- Segments/docs/segments
- Subscription Topics/docs/subscription-topics
- Workflows/docs/workflows
- Tracking/docs/tracking
- Inbound Email/docs/inbound-email
- Webhooks/docs/webhooks
- SMTP/docs/smtp
- MCP/docs/mcp
- Mailboxes/docs/mailboxes
- Suppressions/docs/suppressions
- Email Validations/docs/email-validations
- Signup Forms/docs/signup-forms
- Regions/docs/regions
- Test Mode/docs/test-mode
- SDK/docs/sdk
- Errors/docs/errors
Framework guides
Step-by-step instructions for every supported language and framework.
- Send email with Next.js/docs/send-with-nextjs
- Send email with Bun/docs/send-with-bun
- Send email with Express/docs/send-with-express
- Send email with Hono/docs/send-with-hono
- Send email with Python/docs/send-with-python
- Send email with Go/docs/send-with-go
- Send email with Ruby/docs/send-with-ruby
- Send email with PHP/docs/send-with-php
- Send email with Java/docs/send-with-java
- Send email with Elixir/docs/send-with-elixir
- Send email with Rust/docs/send-with-rust
Migration guides
Switch to PostStack from another provider in under an hour.
- Migrate from Resend/migrate/resend
- Migrate from SendGrid/migrate/sendgrid
- Migrate from Postmark/migrate/postmark
Alternatives & comparisons
How PostStack compares to other email providers.
- Alternatives/alternatives
- Resend alternative/alternatives/resend
- SendGrid alternative/alternatives/sendgrid
- Postmark alternative/alternatives/postmark
- Mailgun alternative/alternatives/mailgun
- Brevo alternative/alternatives/brevo
- MailerSend alternative/alternatives/mailersend
Blog
Articles on email infrastructure, deliverability, and platform updates.
- Blog/blog
- Self Host Email vs API 2026/blog/self-host-email-vs-api-2026
- GDPR Compliant Email API 2026/blog/gdpr-compliant-email-api-2026
- Best Transactional Email Apis 2026/blog/best-transactional-email-apis-2026
- PostStack vs Resend/blog/poststack-vs-resend
- PostStack vs SendGrid/blog/poststack-vs-sendgrid
- PostStack vs Postmark/blog/poststack-vs-postmark
- Cheap Resend Alternatives/blog/cheap-resend-alternatives
Company
About PostStack, support, and account.
Trust & legal
Trust centre, security posture, and required legal documents.