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SMS MCP server: Let your AI agents send SMS and voice messages
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MAIL2SMS Email to SMS and voice call

SMS and voice calls by email send.

With Mail2SMS from LOX24, every email becomes an SMS or an audio call. This is the fastest way to extend machines, alarm systems, monitoring tools, or older software with SMS: What an email can send can now also send SMS. Without a new interface, without programming.

  • Every system with email
  • SMS or phone call
  • Two variants
From the email to the SMS
SMTP → SMS
01 · ADDRESS

Set destination address

You enter a LOX24-Mail2SMS address as the recipient. Depending on the variant, the phone number and access data are included in the address or in the text of the email.
02 · SEND

Send an email

Your device or software sends the email as usual via SMTP. You don't need to change anything on your system.
03 · DELIVERY

SMS or call goes out

LOX24 turns text and text messages into an SMS, and if desired, a phone call, and makes it available in seconds.
Variations
2 Ways
DELIVERY
SMS or call
Typical senders of Mail2SMS
Machines
Alarm systems
Monitoring
Building technology
Legacy ERP
Ticket systems
Preparedness
Machines
Alarm systems
Monitoring
Building technology
Legacy ERP
Ticket systems
Preparedness
WHY MAIL2SMS

If an API is too much work

 

Many devices and older programs cannot handle the REST API, but almost all can send an email. Mail2SMS does just that. It does not build any integration; it simply enters a recipient address.

COMPATIBILITY

Works with any SMTP system

Controls, NAS, routers, monitoring tools, ERP systems or scripts: Everything that can send emails can now also send SMS messages.

Flexible

Two variants for every situation

Whether you can control only the recipient address or also the content of the email: There is a suitable variant for both cases.

CANAL

SMS or phone call

In addition to SMS, you can have the message sent as an audio call; ideal for alarms at night or for landline numbers.

VARIANT A

Everything is contained in the recipient address

The phone number, access, and all options are listed in the address. The subject and text of the email remain free. This is ideal for devices and programs where you cannot influence the content of the email, such as fixed alarm notifications from a control system.

  • The content of the email is up to you; you can choose the subject line, text, or both as SMS.
  • SMS or voice call via the service code text2speech
  • Shipping to an entire group via @email2bulk.lox24.eu
  • Encoding and maximum number of SMS parts are controllable
  • Custom Email2SMS API key, separate from your API key
Documentation Variant A
VARIANT A · ALL IN ONE PLACE@mail2sms.lox24.eu
1234567.e3f3a7…xxxx.491701234567.direct.2.1.2.3@mail2sms.lox24.eu

// Construction, separated by points
user_id        Your LOX24 customer number
api_key        Email2SMS API Key
phone          Recipients, E.164 without +
service_code   direct or text2speech
sender_id      Registered sender 1–6
text_source    0 Subject + Text · 1 Subject · 2 Text
encoding       0 GSM · 1 Unicode · 2 automatically
max_sms_parts  1–10 SMS parts

// To a group: …@email2bulk.lox24.eu with group_id
VARIANT B · ACCESS IN TEXT@email2sms.lox24.eu
To:      +491701234567@email2sms.lox24.eu
Subject: Appendix 3: Pressure below the limit value
Text:    1234#81dc9bdb…#d05512345Appendix3#

// Text structure: ID#API Key#Service ID #Sender
// The subject line becomes the SMS, up to 1,520 characters

// Fixed address, recipient in text:
To:      email2sms@lox24.eu
Text:    1234#81dc…#d05512345Attachment3##+491701234567
VARIANT B

Access in the text, message in the subject

The classic variant: You send to the @email2sms.lox24.eu number or to a fixed address. The access details, shipping method and sender are listed in a line in the text, and the message in the subject line. This works if your system can freely format the email text.

  • Short, readable recipient address; the API key is not included in the address
  • Fixed destination address possible; the phone number is then included in the text
  • Sender can be selected freely, up to 11 characters or 15 digits
  • SMS with up to 1,520 characters, automatically concatenated
  • Error email when the tax line is incorrectly set up
Documentation Variant B (PDF, Chapter 4)
COMPARISON

Which variant is suitable for your system?

 

The rule of thumb: If you can only enter the recipient address, use variant A. If you can customize the subject and text, variant B is often more clear. Both work with the same LOX24 account.

VARIANT B

Access in the text

@email2sms.lox24.eu

Recipients
In the address or in the text
Access
Account number and API key in the first text line
SMS text
From the subject line, up to 1,520 characters
Channels
SMS
Errors
Error email for incorrect tax line

For systems that can freely format the text of the email.

WORTH KNOWING

Details for a clean operation

 

A few technical points that will help with setup, especially for older devices and mail servers.

DIRECTIONAL GUIDANCE

No redirects

Send the email directly to the Mail2SMS address. The gateway does not process forwarded emails.

FORMAT

Only text instead of HTML

In variant B, the text must be sent as pure text. In Outlook and Thunderbird, the option is „Text Only“.

SIGNS

Hyphens and special characters

Send UTF-8. In variant A, select GSM, Unicode, or automatic recognition via the encoding parameter.

FOR EVER

Costs under control

With max_sms_parts, variant A limits the number of SMS parts a message can consist of. Long alarm messages are thus not expensive.

SENDER

Add sender

In variant A, you select one of up to six pre-saved senders by number. In variant B, you enter the sender directly.

GRUPPEN

Eine E-Mail, viele Empfänger

Über @email2bulk.lox24.eu und eine Gruppen-ID erreicht eine Alarm-Mail das ganze Bereitschaftsteam auf einmal.

Sicherheit: eigenen Email2SMS-API-Key verwenden

Bei Variante A steht der Schlüssel in der Empfängeradresse und kann in Adressbüchern oder Mail-Logs landen. Nutzen Sie deshalb den separaten Email2SMS-API-Key aus Ihren LOX24-Einstellungen. Er lässt sich jederzeit neu erzeugen, ohne Ihre anderen Schnittstellen zu berühren.

USE CASES

Wo Mail2SMS im Einsatz ist

 

Maschinen und Anlagen

Steuerungen und Industrie-PCs melden Störungen per E-Mail, das Team bekommt sie als SMS.

Server-Monitoring

Nagios, Zabbix, PRTG und Co. alarmieren per E-Mail, Mail2SMS macht daraus eine SMS oder einen Anruf.

Building technology

Heizung, Kühlung, Aufzug oder Wasserstand: Grenzwertmeldungen erreichen den Hausmeister sofort.

Legacy-Software

Alte Warenwirtschaft oder Fachsoftware kann E-Mails senden. Damit verschickt sie jetzt auch SMS.

Alarm systems

Einbruch-, Brand- oder Sabotagemeldungen zusätzlich per SMS oder Sprachanruf.

Labor und Kühlkette

Temperaturlogger melden Abweichungen, bevor Proben oder Ware Schaden nehmen.

Ticket- und Workflow-Tools

Wichtige Tickets oder Freigaben lösen über eine E-Mail-Regel eine SMS aus.

Bereitschaftsdienst

Nachts per Sprachanruf wecken statt einer SMS, die niemand hört.

FAQ

Häufige Fragen zu Mail2SMS

Mail2SMS is an interface from LOX24 that converts emails into SMS or phone calls. You send an email to a special address, and LOX24 converts the content into SMS. For this, your system only needs the ability to send emails.

Option A, where you can only enter the recipient address and the content of the email is pre-defined. Option B, where your system can customize the subject and text. Both work with the same LOX24 account.

Ja, mit Variante A. Setzen Sie in der Adresse den Service-Code text2speech, dann liest ein Anruf die Nachricht vor.

Ja. Mit Variante A senden Sie an eine Gruppe aus Ihrem LOX24-Adressbuch, über die Adresse …@email2bulk.lox24.eu mit der Gruppen-ID statt der Rufnummer.

In variant A, you choose it yourself: subject and text; only the subject or only the text. In variant B, the subject becomes the SMS message, the text contains the tax line.

Bei Variante B bis zu 1.520 Zeichen. Längere Nachrichten werden automatisch auf mehrere SMS verteilt. Bei Variante A legen Sie mit max_sms_parts fest, wie viele SMS-Teile höchstens entstehen dürfen.

The address can appear in mail logs or address books. For variant A, therefore, use the separate Email2SMS API key from LOX24, which you can create again at any time. In variant B, the key is in the text instead of in the address.

Common causes are forwarded emails that the gateway does not process, an HTML text in variant B, or a typing error in the address. In variant B, you receive an error email when the tax line is incorrect.

Yes, in two ways. LOX24 sends answers to Economy SMS messages to Germany and Switzerland to you for free via email. With a dedicated inbound phone number starting at €29 per month, you receive all answers via email, webhook, or in your LOX24 inbox. This way, for example, you can receive an alarm via SMS reply.

The normal prices of the LOX24 price list apply, excluding any additional fees. A text message to Germany costs between 6.9 and 8.0 cents, depending on the shipping method and tariff level.

Yes. After registering for free at LOX24, you receive 50 cents in starting funds and can immediately send a first test email.

Lieber per REST-API?

Wenn Ihr System HTTP-Anfragen senden kann, bietet die SMS-API von LOX24 mehr Möglichkeiten, etwa Zustellberichte per Webhook.
Go to SMS API
RELATED

Weitere Wege zum SMS-Versand

 

Mail2SMS ist einer von mehreren Zugängen zum LOX24 SMS-Gateway. Alle laufen über dasselbe Konto.

SMS gateway

All access options at a glance: REST API, email, SMPP, and web interface.

Discover
ÜBERBLICK

SMS API

Sending, delivery reports, and receiving through one REST interface.

Discover
REST API

Receive SMS

Eigene Rufnummer für Antworten und eingehende SMS, per Webhook oder E-Mail.

Discover
INBOUND

Die erste SMS per E-Mail, in fünf Minuten

Registrieren Sie sich kostenlos, holen Sie Ihren Email2SMS-API-Key und schicken Sie eine Test-Mail. Mit 50 Cent Startguthaben, ohne Grundgebühr und ohne Vertrag.

JEDES SYSTEM MIT E-MAIL
NO BASE FEE
SMS UND SPRACHANRUF