Mailtrap alternative
A Mailtrap alternative that runs on your machine
Mailtrap sends your test email data to a cloud server, charges a monthly fee, and requires an account before you can send a single test email. LocalMail.dev does the opposite. It runs a real SMTP server locally, catches every email before it leaves your machine, and costs $24 once.
One-time purchase. 14-day refund policy. No account required after purchase.
LocalMail.dev vs Mailtrap
Mailtrap is built for team email testing in the cloud. LocalMail.dev is built for individual developers who want email testing to stay on their machine.
| LocalMail.dev | Mailtrap | |
|---|---|---|
| Cost | $24 once | $15/month+ |
| Works offline | ||
| Data stays local | ||
| Account required | To purchase only | Yes |
| Setup time | 30 seconds | 10+ minutes |
| Rate limits | None | Plan-dependent |
| Dark mode testing | ||
| Raw MIME viewer | Paid tier | |
| Responsive preview | Paid tier | |
| Internet required | After purchase: never | Always |
Why developers switch from Mailtrap
Every email you send through Mailtrap is uploaded to a cloud server. That includes password resets, invoices, internal notifications, and anything else your application sends during development. With LocalMail.dev, the data never leaves your computer.
Mailtrap's paid plans start at $15/month. That's $180/year for something you only use during local development. LocalMail.dev costs $24 once.
Mailtrap requires account registration, email verification, and team setup before you can send a test email. LocalMail.dev requires an account to purchase, but once you have your licence the app runs locally with no login, no API keys, and no cloud dependency.
Mailtrap is unavailable offline. If your internet drops mid-session, your email testing stops. LocalMail.dev runs entirely on your machine and works regardless of your network connection.
No credentials needed after purchase. Just a host and port.
What you get with LocalMail.dev
Everything you need to test transactional emails locally, without sending data to any cloud service.
Local SMTP server
Runs on localhost:1025 automatically. Point any framework or mail library at it with no authentication or TLS required.
Responsive previews
Switch between desktop, tablet, and mobile views in a single click. See exactly how each email renders across screen sizes.
Dark mode testing
Toggle dark mode rendering per viewport. Catch broken styles and contrast failures before any email leaves development.
Raw MIME inspection
View the full MIME source, parsed headers, and SMTP conversation log for every captured email.
Starred emails and collections
Star important emails and organise test runs into named collections. Revisit and compare email output across sessions without losing context.
Native OS notifications
Get a desktop notification the moment a new email arrives, via the OS notification centre on macOS, Windows, and Linux.
Persistent inbox
Emails persist across restarts. Search by subject, sender, or body content across every test run.
Fully offline after purchase
Once your licence is activated, no internet connection is needed. No API keys, no cloud dependency, no data leaving your machine during development.
Questions about switching from Mailtrap
What is the best Mailtrap alternative for local development?
LocalMail.dev is purpose-built for local development. It runs a real SMTP server on your machine, works offline after the initial licence activation, and stores all email data locally. Unlike Mailtrap, there is no monthly subscription and no cloud storage.
Does LocalMail.dev support all the same frameworks as Mailtrap?
Yes. LocalMail.dev works with any framework or language that supports standard SMTP, including Laravel, Django, Ruby on Rails, Node.js, Next.js, Symfony, Spring Boot, and more. You only need to point your SMTP configuration to localhost:1025.
Can I use LocalMail.dev on a team?
Each developer on the team installs their own copy of LocalMail.dev and runs it locally. There are no shared inboxes, no team plans, and no risk of one developer overwriting another's test emails. One licence covers up to three personal machines.
What happens to my Mailtrap data if I switch?
Nothing needs to be migrated. LocalMail.dev captures new emails going forward. Your existing Mailtrap history stays in your Mailtrap account. Once you update your SMTP credentials to point at localhost:1025, new test emails go to LocalMail.dev automatically.
Is there a free trial?
LocalMail.dev does not have a free trial, but it comes with a 14-day no-questions-asked refund policy. If it does not fit your workflow within 14 days of purchase, email [email protected] for a full refund.
One-time purchase
Stop paying monthly for a dev tool.
$24 once. Works offline. No Mailtrap account required.
macOS, Windows, and Linux. 14-day refund policy.
Get LocalMail.dev for $24Also comparing