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01 SMTP

Dedicated SMTP. Your IP. Their inbox.

A European mail relay: STARTTLS on 587, a dedicated address, SPF · DKIM · DMARC. Transactional and bulk on credentials you control.

Create account From €39 / IP
  • Ports25 · 587 · 2525
  • SecuritySTARTTLS
  • AddressDedicated / Shared IPv4
  • RegionsBerlin · Riga · Hong Kong

02 MX

The last hop is the inbox.

Typical time from a dedicated IP to the provider MX. We watch Gmail, Outlook, AOL/Yahoo, and GMX continuously — placement is the job, not a feature list.

Time to inbox seconds

03 IPv4

Reputation lives on the IP.

Each dedicated IPv4 includes 100,000 messages a month. Add addresses as volume grows — same host, same AUTH, multiple domains, no daily cap. All volume plans, including free 3,000 and unlimited.

Dedicated / Shared IPv4 1 address
IPs1
Messages / mo100,000
EUR / mo€39

€0.195 / 1,000 emails · no daily cap

  • SMTP + API
  • Multiple domains
  • Deliverability tools
  • Chat support
Order now All plans

Pay in crypto. Upgrade or cancel anytime.

04 Panel

Sent. Delivered. Bounced.

The panel is the relay, made visible: IP count, allotment, delivery, hard bounce, streams. SMTP or API — same path.

smtp-x.com/account 30d
IPs4
Limit400k
Delivery98.72%
Hard bounce0.31%
StreamSentState
receipts128441ok
alerts41902ok
news217088warm

05 Spec

Dedicated IPs. Live metrics. SMTP or API.

Pool reputation on addresses you own. Watch delivered, bounced, and deferred. Relay on 587 or the API — one AUTH.

Specification 03
IPv4 Dedicated pools. Domain-level reputation you control — not a shared neighbourhood.
Metrics Delivered, bounced, deferred as they happen. SMTP and API, same path.
Relay STARTTLS on 587, or the HTTP API. Transactional and bulk on one set of credentials.

06 AUTH

Four steps to the first 250.

Authenticate the domain, warm the address, send. One domain in under five minutes.

Procedure 04
  1. 01

    Create account

    Sign up and pick a plan that matches your volume. Free 3,000 to test; dedicated IP from €39.

  2. 02

    Verify domain

    Add SPF, DKIM, and DMARC. One domain in under five minutes; more domains on the same IP at no extra cost.

  3. 03

    Warm the address

    Build reputation on your dedicated address. No daily cap on paid plans once you are sending.

  4. 04

    AUTH and send

    Connect smtp.smtp-x.com on port 587, or the API, and deliver to the inbox.

07 Notes

From operators in production.

Real teams using SMTP-X for transactional and bulk delivery.

Why teams choose SMTP-X
Operator notes 04

01 / 04

We had a problem: many transactional emails were marked as spam. Now we use SMTP-X and deliverability to Inbox is no longer a problem!

Jasper Seibt UAM

02 / 04

Dedicated IP for 39 euros per month, wow!

Alex Crangle JOC Systems

03 / 04

Delivery rate has increased by 30% in last quarter.

Julian Smith SIA SPOTRIX

04 / 04

Perfectly coped with mass mailing with a large base (more than 2,000,000 emails).

Stan Ebrink Otis Enging

08 Host

smtp.smtp-x.com

3,000 messages to test. Dedicated IPv4 from €39. Support 07:30–16:30 GMT+2.

Host
smtp.smtp-x.com
Ports
25 · 587 · 2525
Security
STARTTLS
Regions
Berlin · Riga · Hong Kong
Create account Sales