Types of Messages ZOLEO Can Send – ZOLEO

App-to-app messages

App-to-app messages are sent between ZOLEO App users. When you send an app-to-app message from your ZOLEO device, it travels over the satellite network (or WIFI or cellular data if available), just like your satellite SMS and email messages. On the receiving end, your contact receives and replies using the free ZOLEO App on their phone, which uses their internet connection (Wi-Fi or mobile data) to deliver the message.

This means your contacts don't need a cellular or satellite connection or a ZOLEO device to reach you — they just need the ZOLEO App and an internet connection on their end.

Advantages over SMS

App-to-app messages can be up to 900 characters, compared to 160 characters for SMS.
Your messages will be delivered regardless of your contact's SMS availability in a country, since messages travel over the internet to your contact rather than through mobile carriers.
Messages are not subject to carrier filtering, so they're delivered as sent.

Note: App-to-app messaging requires both you and your contact to have the ZOLEO App installed. To reach contacts who don't have the app, use satellite SMS or satellite email instead — both work without internet on either side.

Message status indicators

App-to-app messages display status indicators beneath each message so you always know whether your message has been received and read.

One tick - Your message has been delivered to your contact's device.

Two ticks - Your contact has read the message.

If no tick is visible yet, the message is still on its way.

Email messages

During activation, you choose a unique designated ZOLEO email address for your device, which enables you to send emails from your ZOLEO App. Emails sent from your ZOLEO App will appear to recipients as coming from this designated email address. Emails are limited to 194 characters. This includes the email title.

To receive emails when you lack internet coverage, share your ZOLEO email address with your contacts (this can be found in your app and online account).

For more tips and guidelines, review Best practices for ZOLEO email.

SMS messages

During activation, your unique ZOLEO SMS number is allocated to your ZOLEO communicator. If you want to be contactable via SMS when no internet coverage is available, share your ZOLEO SMS number with your contacts (found in your app and online account).

Note: The email and SMS functionality of the ZOLEO App is separate from and unrelated to any other email or your mobile device's SMS number. To use email and SMS, the ZOLEO App must be linked to your ZOLEO communicator.

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