indexo.dev

useplunk.com

.com crawl

First seen 2026-04-19 · Last seen 2026-05-13 · ok HTTP/1.1 200 5134 ms crawled 2026-05-13

US · 172.67.196.244 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Plunk — Open-Source Transactional Email Platform
Description
Send transactional emails, run marketing campaigns, and automate workflows — all open-source and self-hostable. $0.001/email, no contact limits.
Language
en

Open Graph

title
Plunk — Open-Source Transactional Email Platform
description
Send transactional emails, run marketing campaigns, and automate workflows — all open-source and self-hostable. $0.001/email, no contact limits.

Technology

Server
nginx
CMS
Next.js

Social

Registration

Registrar
NameCheap, Inc.
Created
2022-06-16
Expires
2026-06-16 27 days left
Updated
2026-03-07
Name servers
  • aspen.ns.cloudflare.com
  • eugene.ns.cloudflare.com

DNS records live

NS
  • aspen.ns.cloudflare.com
  • eugene.ns.cloudflare.com
MX
  • 10 mx1.shipmail.to
TXT
  • google-site-verification=lHrw3CJEiu2Q2kClF67-gKmkOeTHCgwiNfDX6fY8b4M

Email authentication strong

SPF
v=spf1 include:amazonses.com include:spf.shipmail.to -all
strict (-all)
DMARC
v=DMARC1; p=reject; rua=mailto:dmarc-reports@useplunk.com; ruf=mailto:dmarc-reports@useplunk.com; fo=1;
policy: reject (enforced)
DKIM
no key found at common selectors

Certificate (current)

E8
from 2026-05-05 to 2026-08-03
Expires in 76 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.useplunk.com/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (7)

Linked from (1)