Sending & Testing
Knowledge Base
A collection of answers to frequently asked questions and step-by-step guides for getting the most out of MailBlastr.
Welcome to the MailBlastr Knowledge Base — a collection of answers to frequently asked questions and task-oriented guides. Where the API reference tells you exactly what each endpoint accepts and returns, the Knowledge Base walks you through how to get something done: receiving and forwarding mail, authoring templates, wiring MailBlastr into your stack, and handling your account.
Sending & testing
Pick the right feature, send test mail safely, and automate your integration.
- Which sending feature should I use? — transactional sends vs. campaigns.
- What addresses can I use for testing? — the mailbox simulator.
- How do I set up automated (E2E) testing? — assert on responses and events.
Receiving & forwarding
- Can I receive emails with MailBlastr? — inbound via webhooks.
- Forward emails with MailBlastr Inbound — a Next.js walkthrough.
Templates & editors
- Template emails with React Email — author templates as components.
- Embed the React Email editor — a visual editor in your own app.
Integrations
- Get started with MailBlastr and Supabase — auth emails and Edge Functions.
- Setting up MailBlastr for multi-tenant apps — single account vs. BYOK.
- Send emails with n8n and MailBlastr — no-code workflow automation.
Account & security
- Where can I find documents like DPA or W-9? — compliance and tax docs.
- How can I delete my team? — remove a team and its data.
- How to handle API keys securely — keep
mb_keys safe.