Convex vs Resend

Convex

Resend

Convex · 18 features

• Actions — Non-deterministic functions for external I/O (fetch, AI APIs, email). Cannot rea…
• Authentication — Convex Auth (built-in) or BYO provider (Clerk, Auth0, Kinde, WorkOS). ID tokens …
• Convex Agents — AI agent framework with durable memory, threads, tool use. Works with OpenAI / A…
• Convex Auth — First-party auth library: passwords, magic links, OAuth, phone — stored in your …
• Convex Components — Reusable backend modules (rate limiter, workflow, aggregate, action-retrier, etc…
• Cron Jobs — Recurring schedules defined in convex/crons.ts. UTC, cron-style patterns.
• Durable Workflows — Long-running multi-step workflows with retries and at-least-once guarantees.
• Exception Reporting — Auto-capture errors to Sentry, Axiom, Datadog.
• File Storage — Upload/download via storage API. Returns storage IDs referenced in documents.
• Full-Text Search — BM25 search index on table fields. withSearchIndex query helper.
• HTTP Actions — Expose public HTTP endpoints for webhooks, OAuth callbacks, third-party integrat…
• Log Streams — Stream function logs to Axiom, Datadog, Sentry. Pro+.
• Mutations — Transactional write functions. All reads + writes in one mutation are ACID; conf…
• Preview Deployments — Every Git branch gets its own isolated deployment. Integrates with Vercel/Netlif…
• Queries — Deterministic read-only TS functions. Automatically cached and re-run when under…
• Real-Time Subscriptions — useQuery auto-subscribes; server invalidates when data a query read changes. No …
• Scheduler — schedule.after / schedule.at — enqueue functions to run later. Durable, survives…
• Vector Search — Native vector index on tables. withIndex + filter fields. Up to 4096 dims.

Resend · 12 features

• Audiences — Contact list management with custom fields.
• Batch Send — Send up to 100 emails in one API call.
• Broadcasts — Bulk email campaigns with audiences, A/B testing, analytics.
• Dedicated IP — Add-on for high-volume senders. Auto warmup.
• Domains — DKIM/SPF/DMARC auto-verification. Per-domain analytics.
• Idempotency — Prevent duplicate sends with Idempotency-Key header.
• Logs + Analytics — Full email logs, delivery heatmap, events table.
• React Email — OSS library (3M+ downloads) to compose emails in React/JSX.
• Scheduled Send — scheduledAt parameter for future delivery.
• Send API — POST /emails endpoint to send. Supports attachments, scheduled send, idempotency…
• Suppressions — Auto-managed bounce + complaint list. API to add/remove.
• Webhooks — Email lifecycle events: sent, delivered, bounced, complained, opened, clicked.