Substack alternatives
Providers that compete with Substack on at least one of: Newsletter
Hosted newsletter platform with social network features.
Switching as developers picking email infrastructure
The question here is which one a backend engineer would rather operate. That means SDK depth in the language already in use, whether a retry can safely be replayed, how much the event log tells you when a customer says the email never arrived, and whether the pricing curve stays sane as volume grows.
Substack does not cover SDK breadth, idempotency keys, operating track record, event stream, and webhook coverage. Loops, Buttondown, and Kit close that gap. The order below weighs this audience's priorities first, so it differs from a general popularity ranking.
ranked for developers picking email infrastructure
- 01
Loops
Marketing TransactionalModern lifecycle and broadcast email for SaaS.
Adds SDK breadth, event stream, and webhook coverage over Substack, with nothing given up on these priorities.
1,000 contacts and 4,000 sends/mo on the Free plan · $49/mo for 5,000 contacts - 02
Buttondown
NewsletterMinimalist, indie-built newsletter platform.
Adds SDK breadth, event stream, and webhook coverage over Substack, with nothing given up on these priorities.
100 subscribers free · $9/mo for 1,000 subscribers - 03
Kit
Newsletter MarketingCreator-focused newsletter platform (formerly ConvertKit).
Adds SDK breadth, event stream, and webhook coverage over Substack, with nothing given up on these priorities.
10,000 subscribers, broadcasts only · $15/mo for 1,000 subscribers (Creator) - 04
Ghost
Newsletter Self-hostedOpen-source publishing with built-in memberships and email.
Adds SDK breadth and webhook coverage over Substack, with nothing given up on these priorities.
Self-hosted is free (your infra cost) · Ghost Pro from $9/mo - 05
Listmonk
Newsletter Self-hostedSelf-hosted newsletter and mailing list manager.
Adds event stream and webhook coverage over Substack, with nothing given up on these priorities.
Free, self-hosted · Self-hosted only
Substack and its alternatives, side by side
Columns are the priorities developers picking email infrastructure weigh, in order. Substack is the first row so the trade in each direction is readable at a glance.
| Provider | DX score | SDKs | Idempotency keys | Operating since | Event stream | Best published rate per 1,000 | Webhooks |
|---|---|---|---|---|---|---|---|
| Substack | 2/10 | None | No | 2017 | No | Tiers not published in comparable form | No |
| Loops | 9/10 | node, python, go, ruby, php | No | 2022 | Yes | Tiers not published in comparable form | Yes |
| Buttondown | 9/10 | node, python | No | 2017 | Yes | Tiers not published in comparable form | Yes |
| Kit | 6/10 | node | No | 2013 | Yes | Tiers not published in comparable form | Yes |
| Ghost | 7/10 | node | No | 2013 | No | Tiers not published in comparable form | Yes |
| Listmonk | 7/10 | None | No | Not published | Yes | Tiers not published in comparable form | Yes |
Loops, Buttondown, and Kit add capability without giving anything up on these priorities. The rest trade one thing for another.