QUOTE(hutchingsp @ Mar 5 2008, 01:43 PM)

I don't send much mail at all, but what I do send, I want to be 99.9% sure it's arrived (or at least that if it hasn't the problem isn't with me).
Echoing others, I have been using it for many months with no problems; in fact, a number of my other email accounts have been blocked by Comcast and other providers as potential spam sources, requiring a message to the relevant ISP asking the ISP to beg Comcast to remove the block. So far that hasn't happened with Spamcop (aka cesmail.net). I use imap.cesmail.net for everything because it works well.
HOWEVER... two cautions:
1) Unless it's been fixed since February (2008), if you cc or email an item to yourself AND you use the Spamhaus PBL, Spamcop will flag your incoming message as spam. If you then accidentally report it, the report will go to your ISP with your IP address on it. The workaround is to either turn off Spamhaus in the Spamcop options OR add your own email address to your whitelist.
2) Email is not usually considered a "reliable" communication method. There are many ways a message can be intercepted, blocked, or fail to be delivered. The standard you cited, however (one failure in a thousand or 99.9%), doesn't sound like it would be too hard to live up to, but I don't think anyone will guarantee it. Trust but verify!
QUOTE(petzl @ Mar 5 2008, 09:44 PM)

SpamCop email servers will be the last to go down in the event of any catastrophe Power off generators take over, generators fail,
UPS kicks in This fails BIG Gyro's keep them alive for considerable time By the time SpamCop Email system drops out the planet will be uninhabital
Very impressive! However, if your messages MUST get through, maybe you should inscribe them on the back of cockroaches, which are reputed to be able to withstand just about any calamity.