Add SubsiMail by subi26 · Pull Request #6058 · getumbrel/umbrel-apps · GitHub
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Add SubsiMail - #6058

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Open

Add SubsiMail#6058
subi26 wants to merge 1 commit into
getumbrel:masterfrom
subi26:add-subsimail

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@subi26

@subi26 subi26 commented Sep 4, 2026

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App

SubsiMail v2.0.0 — self-hosted cold email sequencing platform. Prospect lists, templates, connected inboxes, and campaign data are stored in the user's own SQLite database on their own server, not a third-party SaaS. Positioned as a self-hosted alternative to Instantly / Smartlead / lemlist / Apollo, with flat per-inbox pricing instead of per-seat fees.

Image source

  • docker.io/subsimail/subsimail, tag 2.0.0, pinned to the multi-arch manifest-list digest.
  • Verified linux/amd64 and linux/arm64 both present via docker buildx imagetools inspect subsimail/subsimail:2.0.0.

Notable setup behavior

  • The app requires a free license token from subsimail.com before it's usable, even on the free tier (first connected mailbox is free forever, no card required). From the in-browser setup screen, the user either pastes a token or uses a "Connect your account" button that goes through subsimail.com OAuth. This is called out at the top of the manifest description so it isn't a surprise mid-install. There is no way to use the app fully offline/local-only — flagging this plainly since I know it's a departure from most App Store packages.
  • No default username/password — account creation happens in-browser after the license step.
  • Single web service behind app_proxy, SQLite data persisted under ${APP_DATA_DIR}/data, migrations run automatically and idempotently on startup.
  • No host access, no privileged mode, no extra permissions needed.
  • repo: in the manifest points at the docs site rather than a source repo — the application source is closed, so there's no public repo to link.

Testing performed

  • Built and pushed the multi-arch image myself (amd64 native + arm64 via buildx/QEMU), confirmed both platforms resolve under one digest.
  • Ran the arm64 image directly (docker run --platform linux/arm64), confirmed it boots, prints its normal startup banner, and runs its embedded SQLite migrations without error.
  • Have not yet run a full install through a live Umbrel instance — happy to do that as a follow-up if a maintainer wants it before merge.

Assets for review

Logo: https://subsimail.com/static/apple-touch-icon.png

Screenshot: https://subsimail.com/static/img/marketing/dashboard-hero.png

SubsiMail is a self-hosted cold email sequencing platform: prospect
lists, templates, connected inboxes, and campaign data live in the
user's own SQLite database, not a third-party SaaS.

- Runtime image: docker.io/subsimail/subsimail, multi-arch
  (linux/amd64 + linux/arm64), pinned to the manifest-list digest.
- Single web service behind app_proxy, SQLite persisted under
  ${APP_DATA_DIR}/data.
- First run needs a free license token from subsimail.com (paste or
  OAuth connect) before the app is usable; noted at the top of the
  manifest description.
- Website/docs are used for the manifest's website/repo/support
  fields since the application source is closed.
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