Slow e-mail

Am I the only one with a problem with e-mail? I get messages such as "please validate  your information and try your request again" half of the time when I try to delete messages. Another problem is that it loads e-mails soooooooo sssslllllloooooowwwww or it stops loading completely. Add to this slow speeds (not even close to the 15/5 I'm supposed to get), and I am seriously considering switching over to Comcast (even though I'm not a fan of theirs). But this is just getting ridiculous just to try to read my daily e-mails.