Our new mobile testing feature just went live this week. It's a nice addition to our virtual inbox suite of onscreen renderings. We have learned a number of things so far:
Windows Mobile: You really have to be careful with your template width and padding. Your emails can show up with a huge amount of padding around them causing the recipient to have to do a great deal of horizontal scrolling to see your message.
Symbian: Be very careful with SSL links and images that are referenced from https urls. We saw a warning box that covered the entire message as a result of one SSL image that was coming from a domain with an expired certificate.
iPhone: Definitely the best mobile email experience. We have not seen any surprises here which is great since it is the #3 smartphone.
Blackberry: This device should give you another reason to make sure that the text version of your email looks good!
