Get ready to transform your audience into a thriving empire with Ghost, the ultimate toolkit for the modern creator on a mission to monetize their mojo. Picture this: a sleek website that screams 'you', bursting with content that captivates, newsletters that fly straight into inboxes, and a subscription service that turns followers into financiers. Wave goodbye to bland and hello to a smorgasbord of stunning, free themes that you can finesse to fit your unique flair. But wait, there's more! Ghost's editor is like the Swiss Army knife for content connoisseurs—slick, sophisticated, and oh-so-simple to use. Unleash your creativity with multimedia storytelling that includes everything but the kitchen sink—galleries, chucklesome gifs, videos, podcasts, you name it. And when it's time to hit 'send', those built-in newsletters make sure your words woo your audience without breaking a sweat. Want to play the mysterious type? Ghost's got you covered with native signup forms that turn casual lurkers into committed members. And because we all love a good sneak peek, Ghost dishes out the deets with analytics that spill the tea on who's loving your work the most. Plus, with tantalizing offers and promotions, you'll have new subscribers flocking like seagulls at a beach picnic. All this, hosted on RepoCloud, where the cost is as tiny as your chances of being bored. So, what are you waiting for? Let's Ghost!

Seven million emails from a single binary peaking at 57 MB of RAM: listmonk is a high-performance newsletter and mailing list manager in Go with PostgreSQL as its only dependency - no Redis, no worker processes, no message broker. The project's own production benchmark sent 7+ million emails with the binary peaking around 57 MB of RAM, and throughput exceeds 100K emails per hour on modest hardware. Campaigns run through a multi-threaded, multi-SMTP queue with round-robin delivery, per-server concurrency, retries, and sliding-window rate limiting across providers like Amazon SES, SendGrid, Mailgun, or your own Postfix relay. Subscribers carry custom JSON attributes and are segmented with raw SQL queries, so any audience Postgres can express, listmonk can target. Templates use Go template syntax with 100+ functions for dynamic per-subscriber content, and the Vue dashboard reports opens, clicks, bounces, and unsubscribes with automated bounce processing. A REST API handles transactional email and programmatic control, a built-in media library hosts campaign assets, and CSV or API import migrates lists from hosted platforms. The economics are the headline: where Mailchimp pricing scales with list size, listmonk plus Amazon SES sends the same volume for hosting cost plus roughly $0.10 per thousand emails - commonly a 95% reduction - and your email list, a core business asset, stays on your own infrastructure. AGPLv3-licensed; bring your own SMTP provider for delivery.

Among open-source Mailchimp alternatives, Keila has the most modern UI - built in Germany on Elixir and Phoenix (the PETAL stack), with GDPR-conscious defaults including an optional no-tracking mode, and 100% open source with no proprietary premium tier. Campaign authoring is flexible three ways: a visual block editor with multi-column layouts, Markdown with or without WYSIWYG for hybrid HTML-plus-plain- text sends, and raw MJML for hand-coded designs. The personalization system is unusually clean - every contact carries custom data as a single JSON object (populated from sign-up form fields or pushed from your CMS/CRM), and Shopify's Liquid template language renders it into fully dynamic emails. Targeting uses a visual segment editor backed by a powerful segment language for complex logic over tags, language preferences, and any custom field. Sign-up forms with custom fields grow your lists; open and click tracking measures campaigns; scheduled sending handles timing. Delivery pipes through your own SMTP or first-class integrations with AWS SES (including automated bounce handling), SendGrid, Mailgun, and Postmark. A full REST API manages contacts, campaigns, and segments, with Erlang/OTP reliability underneath. Comfortable at 100K+ subscribers. AGPL-licensed, EU-hosted project, actively developed.

MailCheap is a newsletter app you host yourself that writes, sends, and publishes your issues while charging you only for the emails you actually send, not for subscribers who never open anything. Write in an editor with slash commands, images, and content boxes, or send Markdown and HTML emails through the API, then work through a pre-send review that flags subject, preview text, unsubscribe link, and sender problems first. Bring your audience with you: CSV exports from beehiiv, Substack, Mailchimp, Kit, MailerLite, Buttondown, Ghost, and EmailOctopus import with each reader's status and signup date intact. Imports clean themselves, dropping invalid, misspelled, duplicate, throwaway, and spam-trap addresses, and a server-wide never-email list keeps known bad addresses out of every future import, signup, and send. Sending protects your domain: new contacts receive issues in paced steps, sends pause when bounce or complaint rates climb, and Gmail spam rates are watched daily. Every issue becomes a page on your newsletter's website, with a signup form, author page, share images, and a sitemap. Run up to three newsletters per account, each with separate contacts and campaigns, and follow subscribers over time with open and click reports by inbox provider. AI agents can do anything the dashboard can through the MCP server, and scripts get the same reach through the REST API, with sending marked irreversible so agents ask first. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

SendPortal is a self-hosted email marketing platform for building subscriber lists, sending campaigns, and tracking exactly what happens to every message after it leaves your server. Grow the list three ways: add contacts one by one, import them in bulk from CSV, or push them through the API, which creates or updates subscribers by email address and attaches tags. Tags and custom segments organize audiences, sending product updates to power users and sale announcements to everyone else. A campaign pairs a subject line, which can insert first name, last name, and email placeholders, with an optional HTML template holding content, unsubscribe, and browser view placeholders. Automatic CSS inlining at dispatch keeps designed emails rendering properly in inboxes that ignore style sheets. Send a test email to yourself before anything goes out, then choose immediate delivery or schedule the campaign for later. Pick Queue Draft to review messages before they leave, or Send Automatically when the audience and content are already right. Open and click tracking, bounce records, and unsubscribe events then flow back through provider webhooks into per campaign reports and a searchable message log. Run several brands or clients side by side in separate workspaces inside one interface. Delivery runs through Amazon SES, Postmark, SendGrid, Mailgun, Mailjet, or your own SMTP server, so deliverability stays with providers built for it. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Marketing campaigns and transactional mail from one open-source platform: Notifuse is a modern, self-hosted alternative to Mailchimp, Brevo, and Klaviyo without per-email or per-contact pricing. Built with Go and React on PostgreSQL, it separates concerns cleanly: a drag-and-drop visual builder composes responsive templates from MJML components with Liquid variables like {{ contact.first_name }} and per-template version history; campaigns add A/B testing across subject lines, content, and send times; and a REST transactional API serves application-triggered mail. Delivery routes through your choice of provider - Amazon SES, Mailgun, Postmark, SendGrid, SparkPost, Mailjet, or plain SMTP - with multi-provider failover. Contacts carry custom fields and a full activity timeline (messages, profile changes, webhook events), and real-time segmentation builds dynamic rules over properties, activity, and subscriptions. Event-driven automations create behavioral sequences, a notification center gives recipients self-service preference management, and an S3-compatible file manager handles images with CDN delivery. Multi-tenant workspaces with isolated databases and custom domains suit agencies. Open and click tracking report engagement in real time.

phpList runs the whole mailing operation on your own server instead of a platform that charges by the subscriber: compose campaigns in the web editor, personalise every message, and send to hundreds or millions of subscribers on your schedule. Build lists around your audience, with custom attributes for name, country, language, or anything else, imported from CSV files, your shop, your blog, or your own database, and kept in step with a foreign key. Placeholders turn one campaign into a personal message per reader, and segmentation with exclusion lists aims each send at exactly the right slice. Double opt-in signups, preference pages, and a do-not-send list keep list quality high and complaints low. The queue makes sure nobody receives the same campaign twice across overlapping lists, and embargoes plus scheduling send at the moment you choose. Bounces are processed automatically, and statistics report opens, clicks, and forwards per campaign, per link, and per subscriber, ready to export as CSV. Subscribe pages in your design and language, a REST API, plugins, and multiple administrators with their own permissions round it out for teams. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Plunk consolidates transactional emails, marketing campaigns, and drip automation into one platform riding AWS SES at roughly one-tenth of a cent per message, with zero per-contact charges regardless of list size. The Turborepo monorepo architecture separates the Express.js API server (handling REST requests with Prisma ORM against PostgreSQL) from a dedicated BullMQ worker process that consumes email, campaign, and workflow jobs independently for fault isolation and horizontal scaling. Transactional emails support HTML bodies, template variable substitution via React Email components, attachments, and custom headers with dedicated SMTP relay on ports 465 and 587 for integration with existing frameworks. The campaign system sends newsletters and product updates to full contact lists or dynamically segmented audiences based on contact properties and behavioral events, with scheduling, A/B testing, and performance tracking for opens, clicks, and bounces. The workflow automation builder creates event-triggered sequences with delays, conditional branches, and webhook steps for lifecycle campaigns like onboarding drip sequences and re-engagement flows. Contact management stores unlimited contacts with custom data fields, CSV import, full activity history, and dynamic segmentation. Custom domain verification with DKIM and SPF ensures deliverability, while inbound email processing handles incoming messages with custom routing rules. Docker Compose deployment runs five containers including PostgreSQL, Redis, MinIO for S3-compatible storage, and ntfy for notifications. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

With over 15,000 GitHub stars accumulated since its February 2025 launch, BillionMail delivers the rare combination of a production mail transfer agent and a full email marketing suite in a single self-hosted package — eliminating the monthly per-subscriber fees charged by Mailchimp, SendGrid, and similar platforms. The Go-based architecture bundles Postfix for SMTP transmission, Dovecot for IMAP and POP3 mailbox access, Rspamd for intelligent spam filtering and greylisting, and RoundCube for browser-based webmail, all orchestrated through Docker Compose with PostgreSQL for persistent storage and Redis for queue management and caching. The marketing engine supports unlimited subscriber lists with tag-based segmentation, scheduled campaign sends, A/B subject line testing, and both HTML and drag-and-drop visual template editors for crafting responsive emails without coding. Real-time analytics dashboards track sent volume, deliverability rate, open rate, click-through rate, and bounce reasons, while the platform provides step-by-step DNS record configuration wizards for SPF, DKIM, and DMARC to maximize inbox placement. A transactional email API exposes REST endpoints for single and batch sending, enabling integration with CRM systems, e-commerce platforms, and custom applications. Auto-provisioned free SSL certificates, Fail2ban brute-force protection, and privacy-first architecture with zero third-party tracking ensure secure operation. The platform installs in under eight minutes via a single shell script and supports SMTP on port 25, SMTPS on 465, submission on 587, IMAP on 143/993, and POP3 on 110/995. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPLv3 licensed.

With over 5,100 GitHub stars and a proven track record powering more than 550,000 blogs on the Write.as hosted platform since 2018, WriteFreely strips blogging down to its essential purpose — writing — by removing news feeds, notifications, likes, and engagement metrics that distract from the creative process. The Go binary deploys on any platform as a single executable with SQLite for zero-dependency setups or MySQL and MariaDB for larger installations, consuming minimal system resources and running comfortably on hardware as small as a Raspberry Pi. The auto-saving Markdown editor provides a clean writing environment with instant draft preservation, while published posts render with typography-focused CSS that puts content front and center for readers. ActivityPub federation connects every blog to the fediverse, allowing Mastodon, Pleroma, and other ActivityPub platform users to follow blogs directly, receive new posts in their timelines, and boost or favorite content to their followers. Multi-blog support lets writers maintain separate blogs with distinct pen names from a single account without revealing their association, while OAuth 2.0 integration enables single sign-on onboarding from existing identity providers. Hashtag categorization organizes posts by topic, pinned posts create static pages for permanent content, and draft mode lets writers compose privately before publishing. Blog elements are localized in over 20 languages with first-class right-to-left script support for Arabic, Hebrew, and other RTL languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Most blogging platforms demand a database server, a cache layer, and a healthy slice of RAM before you publish a single sentence; Bloglite runs a complete personal microblog in a few megabytes of memory. You write and edit posts directly in the web interface from a phone or a desktop browser, see the rendered result within seconds, and skip the commit, build, and deploy cycle that static site generators impose on every small update. Posts are written in Markdown with built-in syntax highlighting for code and rendered LaTeX for math expressions, so technical notes, recipes, snippets, and reading highlights all sit comfortably in the same public notebook. Upload images and files to embed them in posts, follow RSS feeds from inside the service, and retrieve anything later through the built-in search or an external search engine. Share posts through short numeric links or longer descriptive slug URLs, and keep ownership of everything: posts live in one SQLite database on your server, and automatic backups export the whole site to plain text files that can be downloaded through the API and committed to a Git repository on a schedule. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Every podcast you publish through Castopod automatically becomes a Fediverse social account that Mastodon, Pleroma, and Pixelfed users can follow, boost, and comment on from their own timelines. This ActivityPub integration transforms podcast distribution from a one-way broadcast into a two-way conversation where listeners interact with episodes through the social platforms they already use. Beyond federation, the platform manages the complete lifecycle: upload an episode, and auto-generated RSS feeds distribute it to Apple Podcasts, Spotify, Deezer, Podcast Addict, and every compatible directory. IABv2-compliant analytics measure downloads, geographic distribution, and listening apps while maintaining GDPR, CCPA, and LGPD compliance through anonymized data collection. Podcasting 2.0 namespace support unlocks chapters with images, SRT/VTT transcripts, location tags, and person credits that modern podcast apps surface to listeners. Video episodes publish alongside audio, and auto-generated clips feed social media sharing workflows. Monetization tools span Value4Value micropayments, premium subscriptions, funding links, and cookieless advertising. Multi-user roles operate per-podcast: contributors, editors, and admins each work within defined permission boundaries. The PHP application runs behind nginx with MariaDB and Redis on a RepoCloud VPS with dedicated CPU, RAM, and SSD. AGPL-3.0 licensed.

A campaign engine wrapped around a contact database: Mautic, the largest open-source marketing automation platform, replaces HubSpot or Marketo without per-contact pricing. Contacts arrive through forms, landing pages, imports, or the REST API and flow into segments: dynamic filters that update automatically from behavior, custom profile fields, or point scores. Segments decide who qualifies; campaigns decide what happens. The drag-and-drop Campaign Builder composes multi-step workflows from actions, positive/negative decision trees, and conditions (field values, tags, device type, segment membership, point thresholds), with static or relative delays, a Jump-to-Step action for moving contacts between branches, and handoffs that push contacts into CRMs or entirely different campaigns. Messaging covers email, SMS, and web/app push out of the box, with A/B testing and a drag-and-drop email builder; dynamic website content swaps page sections per known contact. Lead scoring assigns points for clicks and visits with decay for inactivity, while stages track funnel position. Native integrations cover Salesforce, HubSpot, Zoho, and Dynamics, plus a full REST API for custom sync. It runs on PHP and MySQL with cron jobs processing campaigns and segment rebuilds - self-hosting keeps your entire contact database and behavioral history under your control.

Product teams get a visual home for the transactional and lifecycle emails their application sends with Senlo, which sits on top of the delivery provider they already use instead of replacing it. A drag-and-drop editor builds responsive templates without hand-written HTML, exports to MJML or plain HTML when needed, and keeps templates versioned so edits can be reviewed and rolled back safely. Event-triggered automations turn product activity into onboarding sequences, trial reminders, and win-back flows: your app feeds contact events through the API, and Senlo decides which message goes out next. The transactional API sends a rendered template in one call, so receipts, password resets, and alerts stop living as scattered strings in your codebase. Delivery stops being a black box, with sends, deliveries, bounces, and engagement tracked per workspace, a live feed of failures, and suppressions that block bad addresses before they damage sender reputation. Because sending stays with Resend, Postmark, SES, Mailgun, or your own SMTP server, switching providers never means rebuilding a template. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Mailflow gathers every mailbox you own, the work account, the personal one, and the address stranded at a provider you left years ago, into one unified inbox hosted on your own server. All accounts merge into a single stream sorted by date, then sort themselves into Primary, Newsletters, Social, Notifications, and Other tabs, with a reclassify button for the ones that land wrong. Conversations group into threads, one click unsubscribes from detected newsletters, and full-text search reaches across every connected account at once. Writing mail gets a proper editor with formatting, tables, emoji, attachments, and smart address completion that learns from what you send, while inbox rules and a block list quietly move, archive, star, or trash messages by sender, subject, or content before you ever see them. New mail arrives with real-time toasts and push notifications, the interface installs as an app, speaks eleven languages, and can be reshaped with layouts, themes, and your own CSS. Accounts stay protected with two-factor authentication and single sign-on, contacts sync out over CardDAV, and an optional AI assistant can summarize a thread or draft the reply you are avoiding. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.