Resend
resend.comEmail delivery with retry keys, inbound mail and contact-based broadcasts
Email delivery with retry keys, inbound mail and contact-based broadcasts
Email verification with selectable retry depth and daily recurring credits
Open source platform for building and deploying durable AI agents and workflows in TypeScript.
Connect one application to email accounts across major providers through a normalized API and webhook workflow.
Email API with delivery events and a shared usage balance
Test email and SMS workflows by routing app-generated messages to controllable inboxes and numbers.
Interactive email campaigns with AMP forms, journeys and fallback content
Email diagnostics with separate spam, seed-placement and visual-preview test allowances
AWS email sending and receiving with region-specific production access
A YAML-based CLI for asserting the installed packages, services, files, ports, and other state of a system.
Collaborative email design with workspace-specific brands, approvals and export connectors
Build customer-facing integrations with managed authentication, API access, syncs, webhooks, and TypeScript functions.
Review subscription and usage invoices before charging the account
Route test traffic through a controllable TCP proxy to simulate latency, outages and other network faults.
Manage euro direct-debit mandates and recurring collection activity
Write browser tests for web applications across Chromium, Firefox, and WebKit.
Inject controlled faults into Kubernetes workloads to test recovery and resilience.
Free no-signup email tools and guides for email marketers.
AI voice agents for inbound and outbound business calls, with WhatsApp follow-up and CRM sync.
AI email tool that writes and designs emails for Klaviyo.
Email production with reusable modules and explicit shared-versus-local edits
Sender-independent email previews and quality checks with per-screenshot usage