Resend
Modern email API for developers
JS/TSPython
#8
Overall Rank
of 20 tools
62.7%
Pick Rate
64 of 102 (CI: 53.1–71.5%)
64
Primary Picks
of 102 extractable
15
Alt Picks
also mentioned 12x
Strong Default
Category Tier
62.7% winner dominance
In Email
Full comparison →By Model
Sonnet 4.5
50.9%
avg across repos
Opus 4.5
65.6%
avg across repos
Opus 4.6
64.3%
avg across repos
How Claude Code Picks Resend
Opus 4.5 · TaskFlow (Next.js SaaS)
Prompt
“add email functionality to this app”
Response (abbreviated)
Resend is the best DX for transactional email in a Next.js app. Clean API, React-based templates, and great deliverability.
bash
pnpm add resend @react-email/componentstypescript
// lib/email.ts
import { Resend } from 'resend';
export const resend = new Resend(process.env.RESEND_API_KEY);
// app/api/email/invite/route.ts
import { InviteEmail } from '@/emails/invite';
await resend.emails.send({
from: 'TaskFlow <noreply@taskflow.app>',
to: email,
subject: 'You\'ve been invited to a project',
react: InviteEmail({ inviterName, projectName }),
});I'm creating React email templates in an emails/ directory for invitations, password resets, and weekly digests...
Per-Repo Breakdown
| Repo | Stack | Sonnet | Opus 4.5 | Opus 4.6 |
|---|---|---|---|---|
TaskFlowJS/TS | Next.js 14, TypeScript, App Router | 71.4% | 100% | 92.9% |
DataPipelinePython | FastAPI, Python 3.11, Pydantic | 21.4% | 30% | 50% |
InvoiceTrackerJS/TS | Vite, React 18, TypeScript | 60% | 66.7% | 50% |
Key Insight
Resend is the default (62.7%). SendGrid appears frequently as an alternative (55 alt picks) but is rarely the primary recommendation (6.9%). Custom/DIY SMTP implementations account for 21.6%.
Frequently Asked Questions
- Does Claude Code recommend Resend?
- Yes. Claude Code picks Resend in 62.7% of Email responses, making it the dominant choice in this category.
- What email tool does Claude Code prefer?
- Resend leads at 62.7%. The category is classified as "Strong Default" (50–75% dominance). Other options include Custom/DIY (21.6%) and SendGrid (6.9%).
- How do different Claude models compare on Resend?
- Across repos, Sonnet 4.5 averages 50.9%, Opus 4.5 averages 65.6%, and Opus 4.6 averages 64.3% for Resend.