Your data stays in Europe — CSA-certified, 100% GDPR compliant, ISO-aligned, hosted in Europe.
SMTP for transactional email

SMTP & API for developers.

Transactional email infrastructure for product teams. Connect any sender, deliver in seconds, and see what happens to every message — built on White Image's email expertise.

Password resets, receipts, verification codes — the mail your users refresh their inbox for. Connect any sender in five minutes, deliver instantly, and see exactly what happens to every message.

Live in 5 minutes SMTP or REST API No card to start
delivery · live stream LIVE
avg delivery 2.3s delivered 12,743 last 60 min
Sending for product teams in fintech, e-commerce & SaaS
Get started

From signup to first email in five minutes.

No migration, no rewrite. Point your app at our SMTP relay or call one REST endpoint — whatever your stack already speaks.

  1. Add a sender

    Connect any email address or domain and verify it.

  2. Drop in your keys

    Swap your SMTP host for smtp.inboxtrusted.com, or grab a scoped API key.

  3. Send & watch it land

    Fire your first message and follow it through the live log.

send.sh
# deliver a password reset in one call curl https://api.inboxtrusted.com/v1/send \ -H "Authorization: Bearer wsk_live_••••" \ -d from="login@magazin.ro" \ -d to="user@email.com" \ -d stream="password.reset" \ -d subject="Reset your password" # → 202 queued · delivered in 2.1s
host
smtp.inboxtrusted.com
ports
587 (TLS) · 465 (SSL)
username
••••••••••••••••
password
••••••••••••••••
sender
login@magazin.ro
# works with Nodemailer, PHPMailer, Django, Rails — no code changes
Sending streams

One place for every kind of message.

Keep resets, receipts and alerts on separate streams and subdomains. Each one gets its own reputation, its own reports, its own rules.

Password resets

Critical, time-sensitive

Order confirmations

Receipts & invoices

Delivery updates

Shipping & tracking

OTP & alerts

Verification codes

Support replies

Ticket responses

Webhooks

Event payloads
Message templates

Define a template for each type of email you send.

Build and manage your templates directly in the app: password resets, order confirmations, delivery updates, OTP codes. Each one is ready to send over SMTP or API, with delivery, open and click tracking on every message.

TemplateDeliveredOpenedClicked
Password resetauth.exemplu.ro
99%
88%
74%
Order confirmationfacturi.exemplu.ro
99%
71%
22%
Delivery confirmationlivrare.exemplu.ro
98%
34%
9%
OTP / verificationalerte.exemplu.ro
99%
93%
81%
Delivery, opens and clicks tracked on every template — with full timestamps on each message.
Deliverability

Built to land in the inbox, not the spam folder.

Warmed dedicated IPs on our own infrastructure, automatic bounce handling and suppression lists, and authentication set up for you. Reputation is managed so your reset codes don't end up in junk.

CSA certified Warmed IPs Auto bounce handling Suppression lists TLS encryption
DKIM
DomainKeys signing
inboxtrusted._domainkey → RSA-2048
Signing
SPF
Sender policy
v=spf1 include:inboxtrusted.com ~all
Verified
DMARC
Alignment policy
p=reject · rua=rapoarte@exemplu.ro
Enforced
IP
Dedicated, warmed IP
198.51.100.12 · 42k/day · reputation excellent
Warm
CSA
Certified Senders Alliance
Whitelisted at all major ISPs worldwide
Certified
Certified Sender
Certified Senders Alliance

The strongest assurance your email reaches the inbox.

inboxtrusted is a service by White Image, a CSA-certified company. Our sending IPs sit on the Certified Senders Alliance whitelist, accessed by all major ISPs and spam-filter providers across the world — so your transactional email bypasses standard spam filtering at participating providers.

All major ISPs& spam filters worldwide
WhitelistedIPs, not spam-filtered
Legal + technicalquality standards

No provider can guarantee inbox placement — CSA certification is the closest the industry has to one.

Real-time logs

Every event, the moment it happens.

Sends, deliveries, opens, clicks, soft and hard bounces — each with a timestamp and the full event history per message. Debugging a missing email takes seconds, not a support ticket.

Sent
24,180
Delivered
23,816 · 98.5%
Opened
12,574 · 52%
Clicked
3,789 · 16%
Soft bounces
23
Hard bounces
8
Infrastructure

Your data stays in Europe.

Unlike providers that run on US infrastructure, inboxtrusted operates entirely within Europe. Your customers' emails and data never leave Europe.

100% GDPR compliant

Your data never leaves Europe.

ISO-certified & audited

Aligned with ISO standards, with monthly third-party security audits.

Your data, your control

Full ownership of your data, with no secondary processing.

Everything in one place

The core toolkit for transactional email.

Instant delivery

Built only for transactional mail and tuned for speed and inbox placement.

Full analytics

Delivery, open, click and bounce rates in real time, per message and per stream.

Sender reputation

Automatic bounce handling and suppression keep you out of spam.

ISO-certified & audited

Aligned with ISO security standards, with monthly third-party security audits.

Enterprise security

DKIM, SPF, DMARC and TLS out of the box, with scoped API keys.

Webhooks & events

Real-time, HMAC-signed payloads for every delivery, open and click.

SMTP & REST

A clean API or a standard relay — works with your existing stack.

Domains & streams

Verify domains and split streams across teams and products.

0s
Average time to inbox
0%
Delivery rate
0min
Setup to first send
0%
Events logged in real time
Start in five minutes

Your users are refreshing their inbox.
Don't make them wait.

Connect a sender, drop in your keys, and send your first transactional email today — over SMTP or API.