>>>
>>>Thanks for the info, So there is a difference with Office 365? The problem is of course that we never know which version the client uses, So it was better to do smpt directly. We also use Catalyst, because they provide the tracer feature, which sometimes helped us a lot when there were peculiar network settings that prevented the emails to go out.
>>
>>If you are talking Desktop outlook 64bit, it works for me, no problem. If it is Outlook 64bit 365, that is another story, since Outlook is not actually on the computer. But there are Activexes that work with Outlook 365.
>
>Thanks, then I have to continue testing, because at a clients machine it gave an error:
>
>loOutlook = CreateObject("Outlook.Application")
>"Server execution failed."
>
>And this after installing Outlook 64 bit. Now I am not so sure anymore if it is Desktop or 365. Best if I setup a test environment first.

I have heard many times that Office 365 can NOT be automated. Unfortunately I don't have any machine to test it on myself.