What email tool does Claude Code recommend?

Resend is the most-recommended email tool, appearing in 62.7% of responses. The runner-up is Custom/DIY at 21.6%. This is based on 102 extractable responses across 4 project types.

Is email a settled or competitive market in AI recommendations?

Email is classified as "Strong Default" — one tool is the default with 50–75% of picks, but alternatives have meaningful share.

Do different Claude models agree on email tools?

Yes — all three models (Sonnet 4.5, Opus 4.5, Opus 4.6) largely agree on Resend as the top email tool.

Email

Strong Default

102 extractable responses · Winner: Resend at 62.7%

Overall Breakdown

n=102 extractable responses.

Resend64/102 (62.7%) CI: 53.1–71.5%

Custom/DIY22/102 (21.6%) CI: 14.7–30.5%

SendGrid7/102 (6.9%) CI: 3.4–13.5%

Also Recommended

Tools that appear as second-choice alternatives or mentions when a different tool is picked as primary. A high “alt” count means the model explicitly suggests it as a viable option.

Tool	Alt picks	Mentions	Total
SendGrid	55	22	77
Postmark	33	14	47
AWS SES / Amazon SES	29	29	58
Resend	15	12	27
Mailgun	15	10	25
React Email	18	4	22
Nodemailer	9	1	10
EmailJS	2	4	6

By Stack

Tool preferences differ by language ecosystem. Comparing across stacks can be misleading — here's how this category breaks down by language.

JS/TS

JavaScript / TypeScript

2 repos

Resend73.5% avg

Custom/DIY38.8% avg

EmailJS22.2% avg

Nodemailer21.4% avg

Python

1 repo

Custom/DIY40.7% avg

Resend33.8% avg

SendGrid22.1% avg

Model-by-Model Comparison

Repo	Sonnet 4.5	Opus 4.5	Opus 4.6
TaskFlowJS/TS Next.js 14, TypeScript, App Router	Resend71.4% Nodemailer21.4%	Resend100%	Resend92.9%
DataPipelinePY FastAPI, Python 3.11, Pydantic	Custom/DIY57.1% SendGrid21.4% Resend21.4%	Custom/DIY40% Resend30% SendGrid20%	Resend50% Custom/DIY25% SendGrid25%
InvoiceTrackerJS/TS Vite, React 18, TypeScript	Resend60% Custom/DIY40%	Resend66.7% EmailJS22.2%	Resend50% Custom/DIY37.5%

Category 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

What email tool does Claude Code recommend?: Resend is the most-recommended email tool, appearing in 62.7% of responses. The runner-up is Custom/DIY at 21.6%. This is based on 102 extractable responses across 4 project types.
Is email a settled or competitive market in AI recommendations?: Email is classified as "Strong Default" — one tool is the default with 50–75% of picks, but alternatives have meaningful share.
Do different Claude models agree on email tools?: Yes — all three models (Sonnet 4.5, Opus 4.5, Opus 4.6) largely agree on Resend as the top email tool.