Email and newsletters decision
FeedBlitz
A capable developer can build a useful subset (forms, subscriber management, scheduled sends via a transactional API, RSS-to-email) within a week and modest monthly costs, but FeedBlitz's deliverability systems, inbox-activity features, and monetization network are durable advantages that are costly to replicate at scale.
Visit website↗Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need — the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship.
What a replacement has to do
- Collect subscribers, store/manage subscriber lists and tags, compose/schedule an email or RSS-to-email campaign, and deliver mail via an SMTP/transactional provider with basic analytics.
What it still won’t have
- High-reliability deliverability and in-house anti-abuse systems
- Inbox activity detection and advanced sending optimizations
- Built-in ad network and monetization features
- US-based live support and enterprise SLAs
- Private-label/enterprise deliverability features (domain exclusivity, account policies)
What remains hard
- Infrastructure at scale
Our people, policies and in-house systems work around the clock to maintain FeedBlitz's industry-leading deliverability rate, enabling you to get to the inbox.
- Infrastructure at scale
With acceptance rates north of 99.7%, our heightened focus on list quality, continuous monitoring and consistent application of best industry practices means that you can be confident that your emails getting through.
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 4 seats.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a minimal self-hosted email marketing service using Next.js for the frontend, Node.js/Express for the API, Postgres for subscriber storage, and Postmark (or SendGrid) for transactional sending. In scope: subscription forms + double opt-in flow, subscriber DB with tags and unsubscribe handling, campaign editor that accepts HTML templates, scheduled send worker, RSS-to-email trigger for one feed, integration to send via Postmark API and webhooks to record bounces/complaints, and simple per-campaign open/click counts. Out of scope: building custom SMTP/large-scale deliverability infrastructure, ad network, enterprise SLAs, or inbox-activity detection. Include input validation, error handling, logging, and unit/integration tests for subscriber capture, campaign scheduling, and send flow.
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 6 cited sources+3
- Price verified on pricing page+3
- 3/3 assessment runs agreed+4
- Hard moats found in the evidence-3
- Evidence score64
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time — so the same evidence always produces the same number.
How scoring works →Cited sources · 6
Every page the run actually retrieved.
- official productFeedBlitz — official product
- official pricingFeedBlitz Pricing
- official docsFeedBlitz Features
- official pricingFeedBlitz Pricing (deliverability claim)
- open sourceknadh/listmonk
- open sourcemautic/mautic
Integrity checks
What held up, and what did not.
