10 Best JavaScript SMTP Libraries

List hand-picked by Openbase Experts
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nodemailer

✉️ Send e-mails with Node.JS – easy as cake!

2.5M
15.4K
DefinitelyTyped
MIT
ema

html emails and attachments to any smtp server with nodejs

24K
2.1K
Built-in
MIT
ev

A tool to verify an email address exits via SMTP

2K
No support
ISC
maildev

📫 SMTP Server + Web Interface for viewing and testing emails during development.

25.1K
3.5K
DefinitelyTyped
MIT
sen

send mail without setting up a SMTP server

113K
509
DefinitelyTyped
MIT
sc

Connect to SMTP servers

222K
No support
EUPL-1.1
nst

SMTP transport for Nodemailer

182K
DefinitelyTyped
MIT
ss

Create custom SMTP servers on the fly

133K
DefinitelyTyped
MIT
is

Wrapper over node-imap, providing a simpler api for common use cases

63.5K
229
DefinitelyTyped
MIT
Haraka

A fast, highly extensible, and event driven SMTP server

894
4.3K
No support
MIT
sp

smtp client and server protocol implementation in node

943
219
No support
MIT
em

Send Emails from your application and response object.

607
104
No support
emailjs-smtp-client

SMTP Client for node.js and browser runtimes

272
179
No support
MIT
mai

Artisanal inbound emails for every web app

271
1.9K
No support
MIT
pos

HTTP POST -> SMTP proxy, as Express middleware

23
No support
ISC
hme

An Express middleware implementing the "HTTP POST mail" principle as an SMTP proxy.

6
No support
ISC
xsc

Connect to SMTP servers

1
No support
MIT
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