Ship email that
actually arrives.
1,000 transactional emails per month through our 10/10-rated deliverability MTA. REST API or SMTP submission. API key in under a minute. No warm-up. No DNS headaches.
Two lines to send.
Use plain JSON or drop in SMTP credentials. Your app controls the display name and reply path; transport runs through vøiddo's mailer identity.
SMTP quick start
curl -X POST https://mailer.voiddo.com/api/v1/send \ -H "Authorization: Bearer vmd_your_api_key" \ -H "Content-Type: application/json" \ -d '{ "to": "user@example.com", "from_name": "My App", "from_email": "noreply@myapp.com", "subject": "Welcome aboard!", "html": "<p>Thanks for signing up.</p>" }' # Response: {"sent": true, "used": 1, "quota": 1000}
Built for founders who ship.
Everything you need, nothing you don't.
10/10 deliverability
Our MTA scored 10/10 on mail-tester.com with a SpamAssassin score of 0.2. SPF, DKIM, and DMARC all passing.
Instant API key
Subscribe, get your API key in the confirmation email. No dashboard setup, no domain verification required.
Quota dashboard
Check how many emails you've used this month at any time. Simple status endpoint or our web dashboard.
Reply-To passthrough
Set your app's address as Reply-To so replies land in your inbox, while delivery stays on vøiddo's sending identity.
Zero cold outreach
This relay is for transactional mail only: welcome emails, receipts, alerts. Not for bulk campaigns.
REST + SMTP relay
POST JSON if you want the thinnest path, or plug in SMTP on mailer.voiddo.com:2525 with STARTTLS if your app already speaks SMTP.
Simple pricing.
One plan. 1,000 emails per month. Cancel anytime.
- ✓ 1,000 transactional emails / mo
- ✓ Instant API key on subscription
- ✓ SMTP relay on
mailer.voiddo.com:2525 - ✓ 10/10 deliverability MTA
- ✓ Usage dashboard
- ✓ Reply-To passthrough
- ✓ Cancel anytime
- ✓ Support at support@voiddo.com
Secure checkout via Paddle on extensions.voiddo.com · VAT handled automatically
FAQ
mailer.voiddo.com on port 2525 with STARTTLS. Username is your billing email. Password is the API key we send after subscription activation. Your visible sender name comes from the From: header you submit; delivery still rides on vøiddo's sending identity for deliverability.from_email you send in the payload via Reply-To. Transport is handled by vøiddo's mail identity for deliverability, so this is best for product mail, receipts, alerts, and other transactional flows where branded reply handling matters more than a custom sender domain.