I'm having trouble with a single user who cannot receive e-mails from Atlassian so cannot sign up / participate in Jira.
I have multiple users with email addresses from the same domain (our company)
Most have been successfully added to https://<mysubdomain>.atlassian.net, have gone through the sign up process, can access our Jira and will receive notification emails.
One user (with the same email domain) has been added but does not receive the sign up e-mail and, if attempting to use the forgotten password link, does not receive that email either.
Effectively, this user is visible in Atlassian, can be assigned tasks in Jira but cannot log in to participate.
We have checked with our IT department who advise that there is no impediment on our corporate network or with our e-mail system that would stop this user receiving emails.
Please advise