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
Set destination address
Send an email
SMS or call goes out
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.
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
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
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
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
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.
Everything in the address
@mail2sms.lox24.eu
- Recipients
- In the address, as E.164 without the +
- Access
- user_id and Email2SMS API key in the address
- SMS text
- Subject, text, or both, selectable freely
- Channels
- SMS or voice call, also for groups
- Errors
- Most errors are ignored
For devices and programs with fixed mail content.
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.
Details for a clean operation
A few technical points that will help with setup, especially for older devices and mail servers.
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.
Wo Mail2SMS im Einsatz ist
Häufige Fragen zu Mail2SMS
What is Mail2SMS from LOX24?
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.
Which of the two variants should I choose?
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.
Can I also trigger a voice call?
Ja, mit Variante A. Setzen Sie in der Adresse den Service-Code text2speech, dann liest ein Anruf die Nachricht vor.
Can I send to multiple recipients at the same time?
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.
Which part of the email is being converted into SMS?
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.
How long should the message be?
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.
Is my API key secure in the address?
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.
Why isn't my SMS coming through?
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.
Can recipients reply to the SMS?
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.
How much does an SMS via Mail2SMS cost?
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.
Can I test Mail2SMS for free?
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?
Weitere Wege zum SMS-Versand
Mail2SMS ist einer von mehreren Zugängen zum LOX24 SMS-Gateway. Alle laufen über dasselbe Konto.
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.
