Resend

Transactional email API

Free tier + paidEmail, forms & notificationsresend.com

What it is

Developer-first transactional email API from the team behind React Email. Send via REST, SMTP, or SDKs for Node, Python, Go, Rust and PHP. Handles domain auth (SPF, DKIM, DMARC), event webhooks, inbound receiving, and a broadcast plus audience feature for simple newsletters.

Why it earns a slot

The fastest path from npm i resend to a working signup email — one API key, one function call, JSX templates. The free tier covers most side projects outright.

Know before you commit

Free plan caps at 100 emails/day and 1 verified domain, and an unverified domain can only send to your own address. Shared IPs mean your deliverability rides on your neighbors until you earn volume.

Getting started

npm i resend

Field notes

0 from the community

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Field check

Unverified

Pricing snapshot

Free: 3,000 emails/mo, 100/day, 1 domain. Pro $20/mo for 50,000 emails and 10 domains. Scale $90/mo for 100,000. Overage $0.90 per 1,000.

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Resend (https://resend.com) for this project, then use it only if it fits what we are already building.
Context: Transactional email API. Developer-first transactional email API from the team behind React Email. Send via REST, SMTP, or SDKs for Node, Python, Go, Rust and PHP. Handles domain auth (SPF, DKIM, DMARC), event webhooks, inbound receiving, and a broadcast plus audience feature for simple newsletters.
Reviewer notes (general, not written for this codebase): The fastest path from npm i resend to a working signup email — one API key, one function call, JSX templates. The free tier covers most side projects outright.
Watch out for: Free plan caps at 100 emails/day and 1 verified domain, and an unverified domain can only send to your own address. Shared IPs mean your deliverability rides on your neighbors until you earn volume.
Pricing: Free: 3,000 emails/mo, 100/day, 1 domain. Pro $20/mo for 50,000 emails and 10 domains. Scale $90/mo for 100,000. Overage $0.90 per 1,000.
Setup: npm i resend
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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Neighbourhood

How Resend sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.

Instead of thisDiscord Webhooks Formik React Hook Form Slack Incoming Webhooks

Named in the wiringReact Email Amazon SES Loops Novu Lenny's Newsletter ShipFast

Also in Email, forms & notifications

Amazon SES

aws.amazon.com

Cheapest bulk email (AWS)

PaidEmail, forms & notifications

A la carte $0.10 per 1,000 emails. Essentials plan $0.16 per 1,000. Outbound attachment data $0.12/GB, managed dedicated IPs $15/mo. New AWS accounts get up to $200 in Free Tier credits.

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Basin

usebasin.com

Form backend with spam blocking

Free tier + paidEmail, forms & notifications

Free: 50 submissions/mo, 1 form, 30-day retention. Starter $12.50/mo (250), Growth $24.17/mo (1,000, unlimited forms), Pro $30.62/mo (5,000), Agency $81.25/mo (25,000), billed yearly.

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Courier

courier.com

Multi-channel notification API

Free tier + paidEmail, forms & notifications

Free Developer: 10,000 sends/mo. Business is usage-based at $0.005 per send beyond that. Enterprise is custom with volume discounts.

Open dossier

Discord Webhooks

docs.discord.com

Community alerts via webhook

FreeEmail, forms & notifications

Free. No bot user, OAuth or authentication required; standard Discord API rate limits apply per webhook.

Open dossier