# 자주 묻는 질문

- [문자는 최대 몇 자까지 가능한가요?](https://help.windmillsoft.kr/simplymessage/troubleshooting/undefined.md)
- [MMS 메시지로 발송 시 첨부 가능한 파일 확장자는 무엇인가요?](https://help.windmillsoft.kr/simplymessage/troubleshooting/mms.md)
- [카카오톡 메시지(친구톡, 알림톡) 발송도 가능한가요?](https://help.windmillsoft.kr/simplymessage/troubleshooting/chatting.md)
- [문자 메시지 전송이 실패해요](https://help.windmillsoft.kr/simplymessage/troubleshooting/undefined-1.md)


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