Self-hosted projects tagged “Email”

Ghost is an open-source publishing platform for blogs and websites with built-in newsletters, membership management, and paid subscriptions.

MITActively maintained

Alternative to:

Ghost(Pro)+13

Paperless-ngx is an open-source document management system that ingests scans and files, runs OCR, and turns them into a searchable, taggable document archive.

GPL-3.0Actively maintained

Alternative to:

DocuWare+6

Novu is an open-source notifications platform with a unified API, workflow orchestration, and embeddable in-app inbox for email, SMS, push, and chat.

Actively maintained

Alternative to:

Novu Cloud+4

Open-source, self-hosted platform to manage subscribers, run campaigns, and track analytics. Single Go binary with a Vue UI.

AGPL-3.0Actively maintained

Alternative to:

Mailchimp+19

UVdesk is an open-source PHP/Symfony helpdesk for ticketing, email/mailbox integration, workflows, knowledge base and eCommerce connectors.

OSL-3.0Slowing down

Alternative to:

Zendesk+19

Self-hostable DocuSign alternative to create fillable forms and collect legally binding eSignatures with API and webhooks.

AGPL-3.0Actively maintained

Alternative to:

Docusign+13

Postal is an open source mail delivery platform for sending and receiving email, with SMTP support, web-based management, and tools for running your own SendGrid-style service.

MITActively maintained

Alternative to:

SendGrid+10

SimpleLogin is an open-source email alias service that lets you create aliases to protect your real inbox, forward mail, and reply or send from aliases using custom domains.

AGPL-3.0Actively maintained

Alternative to:

SimpleLogin+3

Go-based, modular mail server implementing SMTP/LMTP/IMAP with built-in DKIM/SPF/DMARC, storage backends (SQLite/Postgres/S3), Prometheus metrics and Docker support.

GPL-3.0Actively maintained

Alternative to:

Microsoft Exchange Online+10

Open source, web-based helpdesk for managing customer support tickets across multiple channels like email, chat, phone, and social media.

AGPL-3.0Actively maintained

Alternative to:

Zendesk+19

Free, self-hosted help desk and shared mailbox for managing support email, conversations, tickets, and team workflows as a Zendesk/Help Scout alternative.

AGPL-3.0Actively maintained

Alternative to:

Zendesk+13

Minimalist, self-hosted WakaTime-compatible backend to track coding time with dashboards, leaderboards, badges, reports, and a REST API.

MITActively maintained

Alternative to:

WakaTime+3

Open source appointment scheduler for customer bookings, provider management, and Google Calendar sync, deployable on your own PHP/MySQL server.

GPL-3.0Actively maintained

Alternative to:

Calendly+18

osTicket is an open source help desk and ticketing system that manages support requests from email, web forms, phone, and API in a multi-agent web interface.

GPL-2.0Actively maintained

Alternative to:

Zendesk+19

Peppermint is a self-hosted help desk and issue tracker with email-to-ticket, notes, file uploads, webhooks, and OIDC authentication for teams.

Slowing down

Alternative to:

Zendesk+18

Kill the Newsletter! turns email newsletters into private Atom feeds by providing a unique email address per feed for subscribing without cluttering your inbox.

MITActively maintained

Alternative to:

Kill the Newsletter!

Privacy-first, end-to-end encrypted password and email alias manager with passkeys, TOTP, apps and extensions, plus a built-in email server for self-hosting.

AGPL-3.0Actively maintained

Alternative to:

SimpleLogin+12

Developer-focused platform for automated, omnichannel messaging (email, SMS, push, WhatsApp) with low-code journeys, segmentation, templates, and self-hosting.

MITActively maintained

Alternative to:

Customer.io+19

Docspell is a self-hosted document management system that imports scanned files and email attachments, runs OCR, and helps organize documents with tags, metadata, and search.

AGPL-3.0Actively maintained

Alternative to:

DocuWare+5

Self-hosted email archiving platform for ingesting, storing, indexing and searching emails from Gmail, Microsoft 365, IMAP, PST and more.

AGPL-3.0Actively maintained

Alternative to:

MailStore Server+4

Keila is an open-source newsletter tool for creating email campaigns, managing contacts and segments, building signup forms, and sending via SMTP or email providers.

AGPL-3.0Actively maintained

Alternative to:

Mailchimp+17

Open-source emailing platform for newsletters and transactional emails with a visual MJML builder, segmentation, A/B testing, analytics, and a REST API with webhooks.

AGPL-3.0Actively maintained

Alternative to:

Mailchimp+19

Self-hosted email archiving system for syncing IMAP and Microsoft 365 mailboxes, indexing content and attachments, and exporting or restoring mailboxes with auditing and retention.

GPL-3.0Actively maintained

Alternative to:

MailStore Server+3

Privacy-focused Gmail cleanup app to bulk unsubscribe, delete emails by sender, mark as read, archive messages, and manage labels using the Gmail API.

MITActively maintained

Alternative to:

Unroll.Me+6

MantisBT is a free web-based issue tracker for managing bugs, tasks, and projects with customizable workflows, email notifications, and role-based access control.

Actively maintained

Alternative to:

Atlassian Jira+7

Cypht is an open-source PHP/JavaScript webmail and RSS aggregator built from modular plugin sets, unifying multiple accounts with search and server-side filters.

Enterprise-grade, disk-based backup server for Windows, Linux, and macOS clients using SMB, rsync, or tar over SSH, with deduplication and web-based restores.

GPL-3.0Actively maintained

Alternative to:

Veeam Backup & Replication+10

Open-source, self-hostable file transfer service with resumable uploads, S3 or disk storage, transfer requests, and end-to-end encrypted WebRTC quick transfers.

AGPL-3.0Slowing down

Alternative to:

WeTransfer+9

Request Tracker (RT) is an enterprise-grade ticketing and issue tracking system with email integration, automation, workflows, reporting, and optional asset management.

GPL-2.0Actively maintained

Alternative to:

Zendesk+19

Nextcloud Mail is a webmail app that connects to IMAP/SMTP accounts, offering a unified inbox and deep integration with other Nextcloud apps like Contacts and Calendar.

AGPL-3.0Actively maintained

Alternative to:

Microsoft Outlook+11