TeneoSMTP RELAY
Belgian SMTP relay · since 2007

Mail that matters, from your own IPs.

Invoices, login codes, order updates, payslips, campaign sends. Relayed from Belgium, on IP addresses that are yours, by people who answer.

Free plan: 100 messages a day · card required · nothing charged until you choose a plan
console.teneo.be · IP reputation
Healthy · reputation

None of your 2 IP addresses is listed on a blocklist. 0 complaints in 30 days.

IP addresses
2
yours alone
Blocklisted
0
7 lists, hourly
Reverse DNS
2/2
confirmed
Complaint rate
0.004%
target ≤ 0.10%
IP addressBlocklistsMicrosoft SNDSDelivered 24 h
195.137.243.124Not listedGreen168,150
195.137.243.189Not listedGreen161,122
Trusted bySD WorxAcertaAPGWebdoosVeepeeOutspotZeemanEngagor
Built for SaaS & platformsMedia & e-mail agenciesE-commerce & ERPPayroll & HRFinance & insuranceHealthcare & public bodies
Why Teneo

Three things you won't get from a cloud giant.

Your own IP addresses

A reputation nobody else can damage. We warm them up and watch them for you.

7 blocklists hourlyMicrosoft SNDSDKIM rotationFeedback loops

EU-only data, Belgian company

Your mail and its logs never leave the EU. Processed by a Belgian company under Belgian law, with every sub-processor named.

DPA publishedSub-processors listedEU regions only

People who answer

A ticket in the console alerts our helpdesk team. No tiers, no bots.

Status pageAnswered within one working dayTickets in the console
The console

Everything about your mail on one screen.

Delivered, bounced, complaints, queue, accounts, domains. Green when it is fine, and a plain sentence when it is not.

console.teneo.be · overview · last 24 hours
■ Healthy · last 24 hours

Mail delivery is healthy.

All checks inside target: bounce rate, complaint rate, queue, domain authentication.

Relay accountsChecked 15:49
Delivered · 24 h
58,412
99.91 % of injected
Bounce rate
0.09%
target ≤ 0.50 %
Complaint rate
0.00%
target ≤ 0.10 %
In queue
0
target ≤ 2,500
Relay accounts
7/7
0 idle · 0 locked
Domains authenticated
12/12
all fully authenticated
Message flowLast 24 hours · all relay accounts
Handled · 24 h58,465
58,412 99.91 % delivered53 0.09 % bounced0 in queue0 complaints since yesterday
Volume and bounce rate30 days · daily
Delivered1,313,376
Bounced1,182
Bounce rate0.09%
Days over target0
Peak day96,420
100k
66k
33k
0
17 Sept23 Sept29 Sept05 Oct11 Oct16 Oct
EventsNewest first
14:02DKIM rotation completeshop.example.be now signs with the new key; the old record may be removed
12:45Password rotatedRelay account orders, by Lies V.
10:00Blocklists checked195.137.243.124 on 7 lists: not listed
08:07SNDS status195.137.243.124 is GREEN at Microsoft SNDS
YesterdayTicket answeredT-000031 answered by Teneo
YesterdayAPI client created“Reporting export”, by Tom D.
How it works

Start sending in less than 5 minutes

Three steps, nothing to install, no sales call. Nothing is charged until you choose a plan.

1≈ 1 MIN

Create your account

Work e-mail and a card, nothing charged. Your relay login is on screen a minute later.

Servertlsrelay.teneo.bePort587 · STARTTLSLoginmailclass-orders@…
2≈ 2 MIN

Publish two DNS records

Copy both from the console into your DNS. We check them every hour and tell you when they are live.

DKIM · TXTteneo20261016._domainkey.yourdomain.bev=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEF…
SPF · TXTv=spf1 include:servers.belgium.teneo.be ~all
3≈ 1 MIN

Change one SMTP setting

Point your application at tlsrelay.teneo.be. The first message shows up in the live delivery log as it lands.

Delivery log · live12:45:41 · delivered · orders · jan@example.be12:45:40 · bounced · orders · 550 5.1.1 no such user
12:45:41 · deliveredThat is the whole setup. 100 messages a day are free, for as long as you like.
Start for Free
Pricing

One monthly price, set by your volume.

Above five million a month, we talk.

100 K500 K1 M2 M3 M5 M
Own IP addresses once your flow is real
Unlimited relay accounts and domains
Console, API and live docs
Reputation management
24/7 monitoring, engineer support, status page
No setup fee, monthly invoicing on actual volume
100,000 messages / month
€ 135 / month excl. VAT
€ 1.35 per 1,000 messages Start for Free 2026 price list, excl. VAT. Includes dedicated IPs once your flow is real. Invoiced in euro from Belgium. EU companies with a VAT number pay no Belgian VAT (reverse charge); Belgian companies pay 21 %.
Data in Europe

The documents, not the adjectives.

Data processing agreementArt. 28 GDPR · EN · NL · FR
Sub-processorsTwo, both in EU regions, named and dated
Architecture & retentionContent relayed, never stored; logs kept 12 months, in the EU
Security questionnaireThe usual 120 questions, already answered

Not ISO-certified, and we say so. Nineteen years of running mail infrastructure, written down for your DPO.

Customers

Already carrying the mail that matters.

1.3 M

Campaign and transactional sends a month for a media agency's clients, each on its own domain.

E-mail agency
8.5 M

Payslip notifications a month on their own IPs, since 2019.

Payroll provider
0.5 M

Statements and reminders a month from a SaaS platform, pulled nightly through the API.

SaaS platform
Developers

SMTP in a minute. An API with live docs for the rest.

Delivery log, statistics, domains, queue, reputation, complaints. Client credentials, one-hour tokens.

Guide: SMTP relay or email API, which one and when

GET /api/v4/domains
{
  "data": [{
    "name": "mail.example.be",
    "dkim":  { "state": "ok", "selector": "teneo20261016" },
    "spf":   { "state": "ok" },
    "dmarc": { "state": "ok", "policy": "reject" },
    "messages_30d": 1686905
  }],
  "meta": { "page": 1, "total": 17 }
}
POST https://tlsrelay.teneo.be/api/v1/send.json
{
  "username": "mailclass-orders@tlsrelay.teneo.be",
  "password": "••••••••",
  "message": {
    "mailclass": "orders",
    "from_email": "orders@yourdomain.be",
    "to": [{ "email": "jan@example.be" }],
    "subject": "Your order 4821 has shipped",
    "html": "<p>Your order is on its way.</p>",
    "idempotence_key": "order-4821-shipped"
  }
}

{ "success": 1, "message_id": "<3f9c…@yourdomain.be>",
  "result_reason": "success_immediate" }
Email API submission

No SMTP library? One HTTPS request.

Same relay login, same IP addresses, same delivery log. One message or a batch of 500 per call, an idempotence key against double sends, attachments included.

FAQ

Questions we get asked.

What is an SMTP relay, and when do I need one?

An SMTP relay accepts mail from your application or mail server and delivers it to the recipients' mailboxes, from IP addresses with a good reputation. You need one when your mail has to arrive, invoices, login codes, order updates, and you do not want to run and protect a sending server yourself.

What does Teneo cost?

The free plan gives you 100 messages a day for as long as you like. Above that there is one monthly price set by your volume, from € 134.75 excl. VAT for 100,000 messages a month. No setup fee, and the invoice follows what you actually sent.

Do I get my own IP addresses?

Yes. Once your flow is real you send from IP addresses that are yours alone, so no other sender can damage your reputation. Teneo warms them up and watches them: seven blocklists every hour, Microsoft SNDS, DKIM rotation and feedback loops.

Where is my mail processed and stored?

Mail is relayed from Belgium and the content is never stored. Delivery logs are kept for twelve months in EU regions. Teneo BV is a Belgian company under Belgian law, with a data processing agreement under article 28 GDPR and every sub-processor named.

How long does setup take?

Under five minutes. Create an account, publish the two DNS records the console shows you, and point your application at tlsrelay.teneo.be on port 587. No SMTP library? Send over HTTPS with the Submission API, same login, same IP addresses.

What happens when something goes wrong?

The delivery log shows every message, with the bounce reason in plain words. A ticket in the console alerts our helpdesk team, and the status page shows what we are working on. No tiers, no bots.

Two ways to start

Start sending today, or talk to us

Free plan: 100 messages a day · card required · nothing charged until you choose a plan