HI, I can send any attachments, but when i want to send .ICS files it is not working .
I receive error : "{"At least one recipient is not valid., A message can't be sent because it contains no recipients."}
without attachment the code is sending.
with .txt attachment the code is sending.

What is wrong with the .ics ? Has it something to do with teh content op the ics ?

Hi,
I understand your reply. But this is not the case.
Double checked the code and the behaviour is quite strange like discribed :
- No attachment : no problem
- .txt attachment : no problem
- .ics attachment . Warning "At least one recipient is not valid., A message can't be sent because it contains no recipients."

In all 3 case the to is filled in ....

Thanks for helping

Karl