> As an aside, not sure if OP is related to them but updown.io is a nice service and I appreciate the simple PAYG pricing! For what it's worth their mails seem to get through successfully to me too.
Not related in any way except as an happy customer. They added a blog recently and this article caught my eye because of the nightmare that is mail delivery issue for everyone.
I found it particularly ironic that you now have to think like a spammer (i.e. look at spam detection engine source code to find a way to circumvent their heuristics) in order to get your totally valid email delivered (^_^).
Not related in any way except as an happy customer. They added a blog recently and this article caught my eye because of the nightmare that is mail delivery issue for everyone.
I found it particularly ironic that you now have to think like a spammer (i.e. look at spam detection engine source code to find a way to circumvent their heuristics) in order to get your totally valid email delivered (^_^).
edit: typo