Is There A Mailbox Storage Limit?

Is there a limit how big my mailbox can grow in size?

By default an Email account does not have a limit in size. Within the control panel you can set a size limit per mail box if you choose. Once the Email account goes over the allotted limit, all messages are bounced back to the sender.

Email storage is part of your total allotted disk space available with your web hosting plan. Therefore, if you go over your allotted total disk space you are charged extra for the space used.