Intentionally filling an e-mail server's disk by sending very large or multiple pieces of mail is called a mail bomb. Mail bombs disrupt service to all mail server customers and is called a denial of service attack. It is illegal. Each AgVAX e-mail account has slightly over 1 megabyte of disk space. When that is exceeded, the e-mail service for that account is automatically disabled.
Quotas are a universal feature of e-mail accounts.
Word processor files carry a high overhead, sometimes over 100K, of formating information. One can compose a formatted message in Microsoft Word or Word Perfect and then cut and paste the document into a Eudora message. No attachment is needed and the formatting overhead is eliminated. Eudora Pro itself has a spell check - it is possible to compose in Eudora. These two methods are also self documenting, which is ideal for record keeping.