Thread: Mass Email

Hello there, I don't know what is wrong with my email, can you please help? I am a member of an event committee and use roundcube webmail with my email address. I try to reply to the emails and it always just says "Failed to Send Message" at the top. But yet, I can only send it to a maximum amount of 2 people. I need to be able to reply to 9 people and it won't let me. Can you please help me and tell me how to fix this issue?