Open-source projects tagged “Email”.

TH

Thunderbird

United StatesOpen Source

Popular free email client developed by Mozilla, known for its security and flexibility.

Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.2 projects#emailProjects tagged with this topic in the verified catalog.12 projectsopen-sourceProjects tagged with this topic in the verified catalog.2 projectsprivacyProjects tagged with this topic in the verified catalog.3 projectsMicrosoft OutlookProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative

Alternatives toMMicrosoft OutlookMMicrosoft OutlookProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative

BI

BillionMail

AGPL-3.0

BillionMail gives you open-source MailServer, NewsLetter, Email Marketing — fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr

Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.2 projects#GoProjects tagged with this topic in the verified catalog.2 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsNodeJSProjects tagged with this topic in the verified catalog.9 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.7 self-hosted optionsResendModern proprietary email API for developers.5 alternatives

Alternatives toRResendRResendModern proprietary email API for developers.5 alternatives+3

TU

Tuta

GPL-3.0

Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.

Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.2 projects#TypeScriptProjects tagged with this topic in the verified catalog.6 projectsGithub ActionsProjects tagged with this topic in the verified catalog.10 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsGmailProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…4 alternatives

Alternatives toGGmailGGmailProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…4 alternatives+4

US

useSend

AGPL-3.0

Open source alternative to Resend, Sendgrid, Postmark etc.

InfrastructureOpen-source projects grouped in this category for discovery and comparison.6 projects#TypeScriptProjects tagged with this topic in the verified catalog.6 projectsGithub ActionsProjects tagged with this topic in the verified catalog.10 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsResendModern proprietary email API for developers.5 alternatives

Alternatives toRResendRResendModern proprietary email API for developers.5 alternatives+3

DI

Dittofeed

MIT

Open-source customer engagement. Automate transactional and marketing messages across email, SMS, mobile push, WhatsApp, Slack, and more 📨

InfrastructureOpen-source projects grouped in this category for discovery and comparison.6 projects#TypeScriptProjects tagged with this topic in the verified catalog.6 projectsGithub ActionsProjects tagged with this topic in the verified catalog.10 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.7 self-hosted optionsMailchimpProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…4 alternatives

Alternatives toMMailchimpMMailchimpProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…4 alternatives+3

NO

Notifuse

FranceLicense not declared

Notifuse is an open-source & modern emailing platform

InfrastructureOpen-source projects grouped in this category for discovery and comparison.6 projects#GoProjects tagged with this topic in the verified catalog.2 projectsGithub ActionsProjects tagged with this topic in the verified catalog.10 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.7 self-hosted optionsResendModern proprietary email API for developers.5 alternatives

Alternatives toRResendRResendModern proprietary email API for developers.5 alternatives+3

UN

UnInbox

License not declared

Modern email for teams and professionals. A replacement for outdated email technology and tools. Alt to hey.com, front.com, missiveapp.com

InfrastructureOpen-source projects grouped in this category for discovery and comparison.6 projects#TypeScriptProjects tagged with this topic in the verified catalog.6 projectsGithub ActionsProjects tagged with this topic in the verified catalog.10 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.7 self-hosted optionsGmailProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…4 alternatives

Alternatives toGGmailGGmailProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…4 alternatives+2

SE

Sessy

License not declared

Open-source email observability for AWS SES

Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.2 projects#RubyProjects tagged with this topic in the verified catalog.1 projectGithub ActionsProjects tagged with this topic in the verified catalog.10 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.7 self-hosted optionsResendModern proprietary email API for developers.5 alternatives

Alternatives toRResendRResendModern proprietary email API for developers.5 alternatives+3

HY

Hyvor Relay

AGPL-3.0

✉️ Open-Source Email API for Developers. Cloud & Self-hosted Alternative to SES, Mailgun, SendGrid.

InfrastructureOpen-source projects grouped in this category for discovery and comparison.6 projects#PHPProjects tagged with this topic in the verified catalog.1 projectGithub ActionsProjects tagged with this topic in the verified catalog.10 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.7 self-hosted optionsResendModern proprietary email API for developers.5 alternatives

Alternatives toRResendRResendModern proprietary email API for developers.5 alternatives+3

TW

Twake Mail

AGPL-3.0

A multi-platform (Flutter) application for reading your emails, with your favorite devices, using the JMAP protocol!

InfrastructureOpen-source projects grouped in this category for discovery and comparison.6 projects#DartProjects tagged with this topic in the verified catalog.1 projectGithub ActionsProjects tagged with this topic in the verified catalog.10 projectsJavaScriptProjects tagged with this topic in the verified catalog.11 projectsSelf-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.7 self-hosted optionsGmailProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…4 alternatives

Alternatives toGGmailGGmailProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…4 alternatives+1