NB: GSM stands for Global System for Mobile Communications, and refers to the most frequently used alphabet used to write text messages. If you need to send as any other character then you can send your message as Unicode, but this will cost more characters.
Who owns MessageMedia?
Sinch
Can you text from office365?
Send SMS From Office 365 Online Send SMS messages directly from your Office 365 Outlook account, accessed through a browser. Outgoing messages are delivered to the mobile devices of recipients as SMS. Incoming replies are delivered as emails to your inbox.
What does it mean when you send a text and it says MMS?
Multimedia Messaging Service
Should I use MMS or SMS?
Informational messages are also better sent via SMS because the text should be all you need, though if you have a promotional offer it may be better to consider an MMS message. These image messages are also better for lengthy messages as you won't be able to send more than 160 characters in an SMS.