805 Open source projects that are alternatives of or similar to checkdmarc

Command line utility and a Node.js library for email authentication

Compact large SPF chains into flat blocks of IP addresses

It's a lightweight, fast and reliable Sendmail milter that implements the Sender Policy Framework

Another utility to analyze state of deployment of security-related email protocols.

Automated solution for hosting email, web, DNS, XMPP, and ZNC on OpenBSD.

A dart package for many helper methods fitting common situations

Provides email verification on the go.

✉️ Composable all-in-one mail server.

Insular email distribution - mail server as Docker images

Hermes Secure Email Gateway is a Free Open Source Ubuntu 18.04 or 20.04 Server based Email Gateway that provides Spam, Virus and Malware protection, full in-transit and at-rest email encryption as well as email archiving. It features the latest email authentication techniques such as SPF, DKIM and DMARC.

Internet.nl toolbox - how-to's for modern mail security standards (DMARC, DKIM, SPF and DANE)

An SMTP server that converts emails into Pushover notifications.

🔎 Node library for parsing plain text email content.

A list of common eMail providers.

Ansible playbooks to deploy a full featured mail server stack using Docker.

A lua web network framework.

Golang package for send email. Support keep alive connection, TLS and SSL. Easy for bulk SMTP.

Scripts to list, add, update, and remove host records in the Ubiquiti UniFI Dream Machine DNS forwarder.

Go newsletter API backed by DynamoDB

DNS test harness

⏰ A GitHub Action that reminds you to share your own content

A library for building custom DNS servers in Go.

Sending HTML email using Go 💌

Mailmask - easy stop unwanted email. Unlimited, free temporary email addresses, all forwarding to your real email address. Beat spam, protect your privacy.

Convert RSS feeds to emails

DNS-Firewall Python script for UNBOUND

Alternative Free Identity System

A lightweight SMTP mail library

Installer for Thymeflow, a personal knowledge management system.

Automatically maintained malicious host blacklists and false-positive whitelists.

Tool for fetching/refreshing DNS Root Zone trust anchors

Forms on any website

Mentally computable verification codes for email aliases implemented as a postfix tcp table or milter; uses asyncio.

Magenic's automation quick start

Check local or remote list of DNS servers for suitability in DNS Amplification DoS.

Tool that runs a test to check whether one of your applications is affected by the recent vulnerabilities in log4j: CVE-2021-44228 and CVE-2021-45046

make http(s) request to prevent SSRF

I have literally no idea why I did that - Pastebin over DNS

A self-hosted mail forwarding API microservice

No-frills, easy to use, easy to maintain Email client for Android based on the JSON Meta Application Protocol (JMAP).

Windows DNS Block List

Great script for sending and spaming emails! gmail, yahoo, outlook, hotmail.

DNS File EXfiltration

Mail connectors for Camunda Platform 7

'DANE for SMTP' wiki

dynamic dns (dyndns) update client with support for multiple protocols

PowerDNS API PHP Client

SpamgourmetReloaded is a remake of the original spamgourmet.com service - made in Kotlin. The project includes a mailserver and a webinterface.

Access your computer from anywhere. DnsTube is a Windows .NET dynamic DNS client for Cloudflare.

Various asynchronous tools for Nim language

REST API for Knot Service

A simple, gulp powered framework to develop and test responsive emails.

The Hoa\Dns library.

基于 Net.Mail 封装的发送邮件工具类。仅需一行代码，发送邮件。支持自定义邮件发出邮箱、发出方名字等。 支持SSL加密发送。 多个接收人、抄送人。支持群发独显。 支持添加附件、多个附件。 目前大部分主流邮箱全支持。

Official read only mirror for

Google Apps Script for Gmail to filter and sort email from GitLab

Email automation driven by headless chrome.

CUP - Cloudflare (DNS) Updater Program

A validating recursive DNS resolver library and standalone server with DNSSEC support

An efficient multi-threaded DNS resolver validator