Cuttlefish
Open-source · self-hostable · replaces 1 SaaS tool on os-alt
mlandauer/cuttlefish · dead · ★ 1.62k · last commit 23mo ago · 150 open issues
License: AGPL-3.0
Good fit for Rails / Ruby shops that prefer SMTP + an inspectable web UI over an HTTPS API.
Weak at Smaller community than Postal; no native HTTPS send API — you go through SMTP.
In a terminal? npx -y github:SolvoHQ/os-alt-cli sendgrid prints
the SendGrid comparison table including Cuttlefish.
how the CLI works →
Replaces these SaaS
- SendGrid · Transactional email API
Cuttlefish exposes SMTP — point your app at it via standard `MAIL_HOST`/`MAIL_PORT` env. If you were using SendGrid's HTTP API, swap to your language's SMTP library (Nodemailer, smtplib, ActionMailer SMTP). Cuttlefish then handles bounces, click/open tracking, and a per-email log via its dashboard.
README badges for the SaaS this replaces
Maintainers and forks: drop a badge in your README to link readers from the SaaS-comparison page back to your repo.