Organizações, eventos e soluções do ecossistema do email. Cada entrada é verificada e datada.
Vendor founded in 2009 and a participant in the original drafting of DMARC. Its Brand Protection product analyses DMARC reports to bring domains to an enforcement policy and counter brand spoofing. Acquired by HelpSystems in 2021, now Fortra.
DMARC report analysis service founded in 2012 by Tim Draegen, a co-author of the DMARC specification. Aggregates aggregate and forensic reports, identifies sending sources and guides the move to an enforcement policy. Also publishes free SPF, DKIM and DMARC inspection tools.
Platform for deploying and monitoring DMARC, SPF, DKIM, BIMI and MTA-STS, founded in 2018, aimed at SMBs and managed service providers (MSPs). Analyses aggregate reports, offers hosted records and a set of free checking tools.
Free dashboard provided by Google to senders who have verified their domain. For traffic to Gmail it shows the user-reported spam rate, domain and IP reputation, SPF, DKIM and DMARC authentication rates, encryption and delivery errors. A version 2 shows compliance with the sender requirements.
Dutch email domain security monitoring service: receives and analyses DMARC and TLS-RPT reports, monitors SPF, DKIM, MTA-STS, DANE and BIMI records, and maintains a public knowledge base on these mechanisms.
Smart Network Data Services, a free Microsoft service giving owners of IP address ranges data about traffic sent to Outlook.com: volume, complaint rate, spam trap hits and a per-IP reputation colour. Complemented by the Junk Email Reporting Program (JMRP), Microsoft's feedback loop.
DMARC analysis service from London-based vendor Red Sift, founded in 2015. Guides DMARC, SPF and DKIM deployment with per-source instructions, offers dynamic SPF, BIMI and MTA-STS, and integrates with the Red Sift Pulse attack surface platform.
Open source Python tool, Apache 2.0 licensed, that parses aggregate and forensic DMARC reports, fetches them over IMAP or API and exports them to Elasticsearch, OpenSearch, Splunk or Kafka. Ships with Kibana and Grafana dashboards, for teams that prefer to host their own analysis.
Free Postmark service that receives a domain's aggregate DMARC reports and sends a readable weekly summary of sending sources, volumes and SPF and DKIM results. A simple starting point for monitoring a domain at a none policy.
Dutch vendor focused on high-volume email deliverability. Postmastery Console centralises MTA logs (PowerMTA, Postfix, Halon, KumoMTA…) together with DMARC and TLS-RPT reports to track delivery, deferral and bounce rates and their reasons per recipient domain and per IP, with alerting. The company also runs managed MTA operations and supports sending teams.
Email authentication platform covering DMARC, SPF, DKIM, BIMI, MTA-STS and TLS-RPT, with report analysis, hosted records, SPF flattening and a multi-domain dashboard for service providers. Also offers free checking tools.
Proofpoint's enterprise email authentication product: DMARC report analysis, inventory of third-party senders, guidance to a reject policy and lookalike domain monitoring. Integrated with the vendor's email security suite.
South African DMARC platform founded in 2018, sold mainly through resellers and IT service providers. Report analysis, guided SPF, DKIM and DMARC deployment, domain monitoring and BIMI support.
Dutch report collection and analysis service covering DMARC, TLS-RPT, MTA-STS and browser reports (CSP, NEL, Reporting API). A single interface to receive these reports and get alerts, aimed at domain administrators and developers.
US vendor founded in 2015, specialised in DMARC automation for enterprises: report analysis, third-party service identification, hosted SPF and DMARC records to work around the ten-lookup limit, and BIMI support. Partners with mail providers for an integrated offering.
Yahoo's portal for senders, gathering sending requirements, sign-up for the DKIM-based Complaint Feedback Loop and deliverability best practices for Yahoo and AOL domains. Entry point for sender support requests.
Vendor of German origin, now based in California, publishing Abusix Mail Intelligence, a set of IP, domain and hash block lists fed by a large spam trap network. Also offers AbuseHQ, an abuse report management tool for operators, and a free reporting service.
Free IP block list published by Barracuda Networks from data gathered by its email security gateways and spam traps. Used by many servers beyond Barracuda customers. Online removal procedure and an opt-in list for trusted IPs.
Non-profit DNS trust list (whitelist), launched in 2006, recording legitimate mail servers with a trust level. Used by SpamAssassin and other filters to reduce false positives. Operators can request listing of their servers.
Commercial IP (ivmSIP) and domain (ivmURI) block lists created in 2007 by Rob McEwen for anti-spam filters and hosting providers. Known for targeting snowshoe spam spread across many IPs, and for also publishing a list of abused redirector domains.
Portuguese IP reputation service published by AnubisNetworks (Bitsight group), providing a DNS-queryable block list and trust list as well as a per-IP reputation score. Used by anti-spam filters and included in some SpamAssassin rules.
Passive Spam Block List, a free, automated DNSBL fed by spam traps: an IP is listed after sending to a trap and automatically delisted after a few days without further sends. Immediate self-service removal is possible.
Spam reporting service and block list (SCBL) created in 1998 by Julian Haight, owned by Cisco since 2007 through IronPort. The list is fed by user reports and spam traps, with fast automatic delisting once the traffic stops. Reports are also forwarded to hosting providers.
Block lists of the Spamhaus Project, the most widely used worldwide. ZEN combines the SBL (spam sources), XBL (compromised machines) and PBL (residential ranges that should not send directly). The DBL lists domains and the HBL lists hashes. Free under usage conditions, otherwise via the Data Query Service.
Canadian block lists published by LinuxMagic, targeting IPs without proper reverse DNS or with generic hostnames (RATS-NoPtr, RATS-Dyna), spam sources (RATS-Spam) and brute-force authentication attacks (RATS-Auth). Free access with an online removal procedure.
List of domains and hostnames appearing in the body of spam, phishing or malware messages, launched in 2004. Unlike IP DNSBLs it is queried on the URLs found in messages, notably by SpamAssassin. Limited free access and subscription for high volumes.
Swiss block lists in three levels: individual IPs (level 1), allocation ranges (level 2) and whole autonomous systems (level 3). Levels 2 and 3 are controversial because they list entire networks. Automatic delisting after seven days without spam, or immediate paid removal.
Block list of domains found in spam message URLs, maintained since 2004 and included in SpamAssassin's default rules. Several zones by confidence level (black, grey, red, multi). Free for low query volumes, paid data feed above that.
AWS's authoritative DNS service, launched in 2010, billed per zone and per query. Supports DNSSEC, routing policies (latency, geolocation, failover) and domain registration, and integrates with Amazon SES for automatic publication of DKIM records and verified identities.
The reference DNS server, developed since the 1980s and maintained by the Internet Systems Consortium under the MPL 2.0 licence. Both authoritative and recursive, it remains the most deployed DNS software. The bind-utils / dnsutils package provides the dig command line tool, used to query MX, TXT (SPF, DMARC) and PTR records.
Cloudflare's authoritative DNS service, free in its basic tier and among the most used worldwide. Offers one-click DNSSEC, an API and wizards for email records (SPF, DKIM, DMARC), plus Email Routing to forward a domain's addresses. Also runs the 1.1.1.1 public resolver.
Free, non-profit DNS host based in Berlin, backed by SSE and born out of academic research, enforcing DNSSEC on every zone. REST API, dynamic DNS and software under a free licence. Suited to personal projects and organisations wanting secure-by-default DNS.
US managed DNS provider founded in 2002, known for its uptime, with an anycast network, DNSSEC, automatic failover and an API. Aimed at businesses and hosting companies wanting authoritative DNS independent of their host. The same group publishes Constellix.
DNS provider and registrar founded in 2010, developer-oriented, with a REST API, zone templates, DNSSEC and one-click services for configuring third-party platform records (including email). Publishes widely used public documentation on DNS records.
Tool for analysing and visualising a name's DNS resolution chain and DNSSEC validation, originally developed at Sandia National Laboratories and available online and as open source software. Useful for diagnosing delegation or signing errors that prevent email records from resolving.
French registrar founded in 1999, also a DNS provider (LiveDNS with DNSSEC), hosting and mailbox provider. Acquired by Total Webhosting Solutions in 2023. Known for supporting many domain extensions and for its API.
Managed DNS service founded in 2013 as NS1 and acquired by IBM in 2023. Enterprise-oriented with rule-based traffic steering, multi-provider redundant DNS, a full API and DNSSEC. Used by sending platforms for high-traffic zones.
Open source authoritative DNS server, GPL licensed, developed by CZ.NIC, the .cz registry, and used by several registries and root server operators. Designed for high performance with automatic DNSSEC signing. Its resolver counterpart is Knot Resolver.
Dutch open source DNS software, GPL licensed: an authoritative server with database back ends, a recursive resolver and dnsdist (a DNS load balancer). Published by PowerDNS.COM BV, a subsidiary of Open-Xchange, with commercial support. Widely used by hosting providers and operators.
Free site for checking DNS propagation from dozens of resolvers worldwide, useful after changing an MX, SPF, DKIM or DMARC record. Also offers IP, port, block list and header lookup tools.
Domain security configuration assessment tool (DNS, DNSSEC, TLS, HTTPS, MTA-STS, DANE, SPF, DMARC), created by Ivan Ristić, founder of SSL Labs, and acquired by Red Sift in 2022. Free on-demand report and paid continuous monitoring.
Uptime and block list monitoring service. Monitors IP addresses and domains against a broad set of DNSBLs and URL lists, with alerts by email, webhook or chat, and tracks the availability of websites, servers and DNS records.
Free, open source test tool run by the Dutch Internet Standards Platform (including NLnet Labs and SIDN), scoring a domain's compliance with modern standards: for email, IPv6, DNSSEC, STARTTLS, DANE, SPF, DKIM and DMARC. Results are explained mechanism by mechanism.
Set of online DNS and email diagnostic tools: MX lookup, SMTP test, SPF, DKIM and DMARC checks, header analysis and lookups against around a hundred block lists. Paid tier with block list and DNS record monitoring and alerts.
UK uptime, response time, SSL certificate, domain and server monitoring service. Checks network ports and services such as SMTP and DNS from several regions, with alerts and status pages.
Malta-based uptime monitoring service launched in 2010, with a generous free tier. Checks HTTP, ping, TCP ports (including SMTP), keywords and certificates, and sends alerts by email, SMS or integrations. Offers public status pages.
Dutch uptime and performance monitoring service, founded in 2007 and acquired by ITRS in 2020. Monitors websites, APIs, servers and network services, including SMTP, POP3 and IMAP servers and DNS records, from checkpoints worldwide.
Open source mail transfer agent developed since 1995 at the University of Cambridge by Philip Hazel, under the GPL. The default MTA on Debian and widespread on shared hosting through cPanel. Highly configurable thanks to its routing rules and ACL language.
US commercial MTA bundled with a campaign management interface (GreenArrow Studio), aimed at senders and publishers hosting their own sending infrastructure. Handles per-destination queues, bounces, feedback loops and throttling.
Swedish commercial MTA platform, scriptable in a dedicated language, used by hosting companies, operators and sending platforms for inbound and outbound mail. Natively integrates DKIM, ARC, DMARC and MTA-STS and connects to common anti-spam and anti-virus engines.
Open source SMTP server written in Node.js, created in 2011 by Matt Sergeant under the MIT licence. Fully plugin-based architecture designed for high-throughput inbound and outbound mail processing. Used notably as a receiving and filtering front end.
Open source MTA launched in 2023 by a team with a background at the makers of PowerMTA and Momentum, written in Rust and scriptable in Lua, under the Apache 2.0 licence. Designed for very high volume sending with per-domain queues, bounce handling and monitoring integrations. Commercial support offered by the vendor.
Commercial MTA developed by Copernica in Amsterdam, built around a RabbitMQ queue for injection and JSON result reporting. Web interface for managing queues and per-recipient-domain policies, aimed at sending platforms and large senders.
Commercial Windows mail server published since 1996 by Alt-N Technologies (Texas). Aimed at SMBs, it bundles SMTP, IMAP, webmail, calendaring and security features (anti-spam, anti-virus, SPF, DKIM and DMARC authentication).
Open source SMTP server from the OpenBSD project, under the ISC licence, started in 2008 with a focus on simple configuration and security. Available on the BSDs and Linux, suited to modest servers and outbound relays. Handles TLS, alias tables and plugin-based filtering.
Open source mail transfer agent created in 1998 by Wietse Venema as an alternative to Sendmail, under the IBM Public License and later the EPL. The default MTA of many Linux distributions, valued for its modular architecture and security. Handles inbound and outbound SMTP, queues, policies and filters.
Commercial MTA developed by Port25 Solutions from 1999, acquired by SparkPost in 2017 and now part of Bird. A reference for high-volume senders thanks to its fine-grained per-domain queues, virtual IPs and recipient response handling, with detailed event reporting (accounting).
The historical Unix MTA, written by Eric Allman in the early 1980s and long dominant on the Internet. Still maintained as open source; Sendmail Inc. was acquired by Proofpoint in 2013. Known for its complex configuration file and its Milter filtering interface, adopted by other MTAs.
Marketing automation and CRM platform founded in 2003 in Chicago. Known for its automation builder, it targets SMBs and creators. Owner of Postmark since 2022 for transactional email.
Adobe's cross-channel campaign management product, built on the 2013 acquisition of French vendor Neolane. Deployed by large enterprises for email, SMS and direct mail, hosted or on-premises, integrated with Adobe Experience Cloud.
Amazon Simple Email Service, the AWS email sending and receiving service launched in 2011. Pay-per-message, it serves as a sending layer for applications and sometimes for other platforms. Handles DKIM, verified identities, dedicated IPs and bounce and complaint notifications through SNS.
Customer engagement platform founded in 2011 (formerly Appboy), publicly listed since 2021. Cross-channel orchestration (email, push, SMS, in-app, WhatsApp) for large consumer brands and mobile apps, with email delivered through infrastructure partners.
French customer relationship platform, founded in 2012 as Sendinblue and renamed Brevo in 2023. It offers marketing email, transactional email (SMTP and API), SMS, chat and CRM, priced by sending volume rather than contact count, targeting small businesses and developers.
One of the oldest email marketing platforms, founded in 1995 in Massachusetts. Aimed at small businesses and non-profits, with campaigns, events, social posting and simple automation. Owned by Clearlake Capital and Siris Capital since 2021.
Automated messaging platform founded in 2012, driven by product events (email, push, SMS, in-app). Aimed at product and growth teams at SaaS and mobile companies, it builds journeys from behavioural data.
CRM and marketing platform founded in 2006 in Cambridge, Massachusetts. Its Marketing Hub includes email marketing, automation and forms, connected to the sales and service hubs. Aimed at SMBs and mid-market, with a free entry tier.
Cross-channel customer activation platform founded in 2013 in San Francisco. Lets enterprise marketing teams build email, push, SMS and in-app journeys from unified data, with experimentation and AI features.
E-commerce focused email and SMS marketing platform, founded in 2012 in Boston and publicly listed since 2023. Known for its deep integration with Shopify and transactional customer data, it serves online brands for segmentation and automation.
Email platform for SaaS companies, launched in 2022, combining marketing email, transactional email and event-triggered automated sequences in one tool. Aimed at startups and small product teams.
Email marketing platform founded in 2001 in Atlanta and acquired by Intuit in 2021. Aimed at SMBs and online merchants, it covers campaigns, automation, forms and light CRM. Its transactional offering is sold as Mailchimp Transactional (formerly Mandrill).
Email marketing platform founded in 2010 in Vilnius. Offers campaigns, automation, landing pages and forms, with a free tier and an affordable positioning for creators, freelancers and small businesses. Also publishes MailerSend for transactional email.
Transactional email API service created in 2010, later part of Rackspace and acquired by Sinch in 2021. Aimed at developers for sending, receiving (inbound message parsing) and tracking email, with address validation and logging features.
Marketing and transactional email platform founded in Paris in 2010, acquired by Mailgun in 2019 and now part of Sinch. Offers a collaborative editor, an API and an SMTP relay, with EU hosting. Originator of the open source MJML framework.
Transactional email service created in 2010 by Wildbit and acquired by ActiveCampaign in 2022. Known for strictly separating transactional and marketing traffic (Message Streams) and for publishing its delivery times. Also offers a free weekly DMARC report digest service.
Email sending API launched in 2023 and designed for developers, with SDKs for common languages and the React Email framework for writing templates as components. Covers transactional email and, more recently, marketing broadcasts.
Salesforce marketing suite built on the 2013 acquisition of ExactTarget. Its Email Studio component handles large-scale campaigns and automation, integrated with the Salesforce CRM. Aimed at large enterprises, with sending domain management, dedicated IPs and authentication.
French email and SMS marketing vendor founded in 2001 near Lille, with data hosted in France. Aimed at small and mid-sized businesses and local authorities. Its group (Positive Group) also owns Mailify and Tipimail, the latter for transactional email.
API and SMTP email sending service founded in 2009 and acquired by Twilio in 2019. Used mainly for high-volume transactional email by developers and SaaS platforms, with a complementary marketing product. Offers authenticated domain management, dedicated IPs and event webhooks.
API and SMTP sending platform spun out of Message Systems, maker of Momentum, launched in 2014 and acquired by MessageBird (now Bird) in 2021. Aimed at very high transactional and marketing volumes, with event analytics and address validation features.
French customer marketing platform founded in 2001, focused on retail and e-commerce. Combines email, SMS, loyalty and customer data (CDP) for mid-size and large retailers in France, Spain, Italy and China.
Drag-and-drop email and page builder, started in 2014 within the Italian MailUp group (now Growens), available standalone and as an SDK embeddable in other applications. Company based in San Francisco; the editor is white-labelled by many platforms.
Hungarian collaborative email editor founded in 2015, letting several people design a template simultaneously with roles and a shared design system. HTML export and integration with major sending platforms; also offered as an embeddable SDK.
Canadian email and landing page creation platform for large enterprises, founded in 2015 in Ottawa. Lets marketing teams build on-brand campaigns without code, with synchronisation to Marketo, Salesforce Marketing Cloud, Eloqua and other platforms.
Open source, MIT licensed framework for building HTML emails with Tailwind CSS and components, then transforming them (CSS inlining, purging, client compatibility) into send-ready output. Aimed at developers familiar with the Node.js ecosystem.
Open source framework created by Mailjet in 2015, MIT licensed, defining a high-level markup language compiled into responsive HTML compatible with mail clients. Available as a command line tool, a Node.js library and an online editor, widely adopted by email developers.
Online drag-and-drop email editor launched in 2017 by Ukrainian company Ardas, with a template library, reusable modules, a code editor and direct export to many sending platforms. Supports AMP for Email interactive elements.
Czech drag-and-drop email editor, available as an online application and as an embeddable plugin for third-party platforms. Responsive templates, HTML export and test sends, with affordable pricing.
Drag-and-drop editor for emails, pages and documents, offered mainly as an embeddable component (SDK) for SaaS software vendors, and as a standalone product. Responsive HTML export and template library.
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