text: There are many reasons why you cannot access your e-mail account, although I have noticed that Yahoo will randomly take accounts off line for anywhere from 1 to 3 weeks, especially if they see that there isn't very much activity on those accounts.\n\nPerhaps they do this if they're uploading new ads, or if one of their servers is having some problems. They have been known to disable certain accounts for awhile, although they usually put those accounts back on line within 3 weeks or thereabouts. Of course, they're certainly not going to admit to doing this, as you could imagine the number of complaints they would receive!\n\nOutside of that scenario, double check your username and password for spelling errors, as typos are the most common reason why people cannot access their e-mail accounts.