trying to share notebooks, but not receiving the emails

[rminjarez 0]

I have been sharing notebooks with my colleague (who has a free account, I have a premium) successfully...until now. I tried to share a new notebook with her, but she isn't receiving the email. We have tested her email, it is working. She is able to send and share notebooks with me, but mine are not going through to her.  

 

Has anyone come across this problem before?

[ScottLougheed 1,315]

This may be a silly question but have you checked your colleagues Junk Mail folder?