Maya Chen
to support@acme.dev
That worked, thank you for the quick reply! The reset link arrived in seconds.
The fastest way from your code to a real inbox. Send transactional and campaign mail, and receive every reply, from your own domain.
Every message you send and receive,
in one control plane.
Communications Control Plane
Incoming and outgoing mail share a real thread model with authenticated DKIM & SPF delivery.
142,850
Sent this month
28,490
Received
99.98%
Delivery rate
64.2%
Open rate
Linear Security
New personal API key generated
GitHub Deploy
[multivrs/core] Release v2.4.0 success
One HTTP request or a standard SMTP relay. It fits into whatever language and framework you already use, with no SDK to install.
1const response = await fetch("https://multivrs.space/api/v1/mail/send", {2 method: "POST",3 headers: {4 Authorization: `Bearer ${process.env.MULTIVRS_MAIL_KEY}`,5 "Content-Type": "application/json",6 },7 body: JSON.stringify({8 mailboxId: process.env.MULTIVRS_MAILBOX_ID,9 to: ["ada@example.com"],10 subject: "Hello World",11 html: "<strong>It works!</strong>",12 }),13});14 15const { id, error } = await response.json();16 17if (error) {18 throw new Error(error.message);19}20 21console.log(id);Developer experience
Experiment safely, then watch every message move through its lifecycle in real time.
Test credentials run the full pipeline and record the message, without ever delivering to a real person.
Get notified the moment a message is queued, sent, delivered, opened, received, or fails. Payloads are signed and retried.
Receive
Add an MX record and inbound mail is parsed, attachments included, and threaded with the messages you sent. Personal and shared mailboxes live side by side.
Conversations
support@acme.devA new key was created for your workspace…
The release workflow finished successfully.
Amount paid $49.00 · Invoice #1042
That worked, thank you for the quick reply!
Maya Chen
to support@acme.dev
That worked, thank you for the quick reply! The reset link arrived in seconds.
Acme Support
to maya.chen@gmail.com
Hi Maya, we just sent a fresh reset link. It expires in 30 minutes.
Campaigns
Reach your whole audience from the same domain, with the same deliverability and the same logs.
Write campaigns in a rich editor, reuse versioned templates, and send to a consent-aware audience.
Faster builds, smarter previews.
Hi {{first_name}}, here is everything new this month, from instant rollbacks to a redesigned inbox.
Read the changelogTrack consent, tags, and suppression history for every contact.
Schedule broadcasts ahead of time or trigger automations from product events.
Deliverability
Authentication, reputation, and privacy controls are built into every domain you connect, not bolted on later.
Prove you are a legitimate sender. We generate SPF and DKIM records and check them until your domain is verified.
Publish a DMARC policy so inbox providers know how to treat mail that fails authentication.
Bounces and tracked links run through your own domain instead of a shared one.
Contacts who unsubscribe or hard-bounce are suppressed, so you stop sending to people who don't want it.
Every event is signed with HMAC SHA-256 and rejected outside a five-minute replay window.
API and SMTP keys are scoped per project, hashed at rest, and shown exactly once.
Remote images in received mail stay blocked until the reader chooses to load them.
Statuses change only when the provider reports an event. No optimistic guesses in your logs.
Send up to five files per message and receive inbound attachments parsed and ready to download.