Open-source, self-hosted email deliverability testing platform
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May 18, 2026 - Go
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email-deliverability
Here are 41 public repositories matching this topic...
Next generation SMTP mailer plugin for WordPress. Trusted by over 300,000 sites by WPExperts.io
wordpress email emails woocommerce smtp sendinblue gmail-api sendgrid-api mailgun-api email-deliverability
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May 15, 2026 - PHP
Collection of Postmark AI skills
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Feb 28, 2026
📧 Never end in spam with the world's most comprehensive email deliverability checklist
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May 10, 2024 - TypeScript
Email Deliverability Management Library - Email Authentication, Reputation Monitoring, Email List Hygiene, IP Warming Tools & Unified Interface to manage all.
email email-validation email-verification email-deliverability email-authentication email-reputation email-ip-warming
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Apr 10, 2025 - Python
Test your Email Deliverability by schedule and receive email reports.
email smtp deliverability email-deliverability email-testing deliverability-tools spam-checker spam-test
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May 23, 2023 - PHP
Open-source bulk email platform. Send 100K+ personalized emails via Gmail SMTP or AWS SES with tracking, analytics, smart throttling, and zero spam.
react nodejs docker open-source typescript email postgresql email-marketing self-hosted email-sender newsletter smtp aws-ses bulk-email campaign-management email-deliverability email-analytics email-tracking sendgrid-alternative mailchimp-alternative
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May 13, 2026 - TypeScript
A powerful IP Blacklist Remover and Checker tool by ApexSofteck that helps developers and system administrators detect blacklisted IPs, monitor reputation, and automate removal from DNSBL/RBL services to ensure secure communication and better email deliverability.
email-marketing spam-protection network-security dev-tools ip-reputation email-deliverability dns-blacklist server-security automation-tool cybersecurity-tools rbl-checker blacklist-checker ip-blacklist-remover smtp-security apexsofteck ip-cleanup
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Apr 9, 2026 - Python
Cold email deliverability scanner — 400+ spam trigger words, dual scoring (deliverability + ICP clarity), clean rewrite. Claude Code skill.
email-marketing icp email-deliverability cold-email spam-checker claude-code b2b-outreach sales-outreach
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May 14, 2026 - Shell
Email-domain suppression list for progressive nonprofits — disposable services, typos, spam traps. Self-serve ActionKit import. CC0-licensed.
blocklist disposable-email cc0 actionkit email-deliverability nonprofit-tech email-suppression progressive-nonprofits
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May 17, 2026 - Python
Free SMTP Relay for developers — send emails from any app, script or device. Zero cost. Zero limits.
nodejs python php docker-compose email mailer swiftmailer smtp developer-tools smtp-server relay-server email-api smtp-mail sendmail-smtp smtp-relay email-deliverability smtp-mailer transactional-email smtp-relay-server free-smtp
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Apr 1, 2026 - PHP
Laravel package to verify IPs against trusted DNSBL/RBL services, helping detect blacklisted sending servers and improve email deliverability.
laravel email-marketing dnsbl-checker ip-reputation email-deliverability blacklisted-ips blacklist-check rbl-checker
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Apr 15, 2026 - PHP
Superkabe is an email deliverability and sender reputation protection platform. We act as infrastructure armor, sitting between your enrichment data and your sending accounts to enforce safety protocols across your entire fleet.
email-marketing email-validation b2b outbound email-deliverability b2b-saas cold-email cold-outreach b2b-sales outbound-sales email-deliverability-check cold-outreach-tools
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Apr 25, 2026
Bulk email verification & bounce rate checker. Verify email lists, reduce bounces, clean CSV files. 9-point verification engine. Free tools + 5,000 free credits. Powered by Mailthentic.
email-validation email-verification email-checker email-deliverability email-validation-api bounce-rate bulk-email-verifier disposable-email-detection catch-all-detection spf-dkim-dmarc sender-reputation email-list-cleaning free-email-checker email-bounce-check mailthentic email-hygiene
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Apr 8, 2026
Example of checking email delivery using mailsac in Java
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Mar 9, 2022 - Java
Free DNS pre-flight checker — audit SPF, DKIM, DMARC before your email breaks
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Apr 26, 2026 - HTML
You shipped your app. But did you check? Free production readiness scanner — 24 checks in 8 seconds. Email, SSL, secrets, DNS, SEO, performance.
ssl security scanner seo spf dkim developer-tools dmarc email-deliverability fastapi production-readiness vibe-coding
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Apr 11, 2026 - Python
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Oct 23, 2017 - C#
Validate if a domain is live, has DNS, MX, SPF, DKIM and DMARC set up correctly.
go dns cli golang devops networking healthcheck sysadmin cybersecurity spf dkim dmarc email-security email-deliverability email-security-misconfigurations
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May 9, 2026 - Go
Cold email automation infrastructure with domain warm-up, SPF/DKIM/DMARC setup, inbox rotation, and scalable outreach campaigns using SMTP services.
email-automation api-integration email-deliverability cold-email backend-system outreach-automation laravel-smtp
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Mar 11, 2026
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