MailWorthy
Find B2B prospects, extract their emails, screen them for compliance and send campaigns — from one server you own.
- Self-hosted web app
- Your own server — one process, one database file
Launching soon. Join the waitlist and we’ll email you once, when it’s ready.
The problem
Prospecting tools charge every month for something you use in bursts — a lead finder, a sending tool and a list-hygiene tool, each billing through the months you don’t prospect. And your list lives on someone else’s servers, exportable on their terms.
What it does
MailWorthy does the same job on your own server. Search for companies by keyword, location and industry; pull contact emails from their websites; screen each contact with a traffic-light compliance check; and send personalised campaigns through your own email provider. The whole database is one file on your disk — back it up by copying it.
Made for: Agencies, consultants and small B2B firms who prospect in bursts.
How it works
Search
Keyword, location and industry. A built-in search engine needs no API key.
Extract
It reads company home, contact and about pages, including addresses written to dodge scrapers.
Screen
Green, amber or red for every contact. You approve, reject or suppress each one yourself.
Send
Personalised campaigns through your own email provider, within limits you set.
Features
- Company search with no API key needed
- Email extraction, including obfuscated and “name [at] domain” addresses
- Traffic-light compliance screening modelled on UK GDPR and PECR
- Templates with personalisation, live preview and send-a-test
- An unsubscribe link on every email, and a one-click unsubscribe page
- Suppression by address or whole domain; hard bounces suppressed automatically
- Send throttle and daily limit
- CSV import and export — your data, no export gate
Plans
Monthly or yearly, through Stripe. Cancel any time; your plan runs to the end of the period you have paid for.
Pro
One person prospecting
£2.99/month
or £29 a year — save 19%
- Search, email extraction and compliance screening
- Unlimited contacts, with open and click tracking
- SMTP, Resend, SendGrid, Mailgun or Amazon SES
- Google-quality search and AI-assisted extraction with your own keys
- Unsubscribes, suppression and the audit log built in
Business
Agencies and teams
£4.99/month
or £49 a year — save 18%
- Everything in Pro
- Team roles: owner, admin and member
- Run installations for your clients
Good to know
Stated plainly, so nobody signs up for the wrong thing.
- It does not send email itself. You connect an email provider, and its charges are separate.
- There is no ready-made lead database. Results come from a live web search when you run one.
- Addresses are not checked with an outside verification service before sending. Bounces are caught and suppressed afterwards.
- No automatic drip sequences. You decide when each campaign goes.
- Compliance screening supports your decision. It is not legal advice, and the responsibility stays with you.
What you need
- Node.js 20 or newer
- A VPS, Docker host or Node hosting with about 1 GB of memory
- An SMTP account or email provider
- A public web address, for unsubscribe and tracking links
Questions
Do I need a database server?
No. It uses a built-in SQLite database — one file on disk. No Postgres, no Redis, no queue.
Can I export my contacts?
Any time, as CSV. It is your database, and there is no export gate.
Be told when it’s ready
MailWorthy is launching soon. Leave your address and we’ll send one email, when it’s ready. No newsletter, and your address is never shared.
Interested in: Pro. We use your address for this one email and nothing else.