Sometimes email falls through the cracks and doesn't make it to your inbox. We do not have the resources to troubleshoot each individual mail problem, but we can give you general guidelines to help.
As of this writing, there are no bugs related to sending mail in Trello. This means that once the email is sent from our servers, we don't know what happens to it. We've passed on the email and trust that your mail server will deliver it to you.
Emails from Trello and Atlassian
All emails from Trello and Atlassian will have a From header with one of the following email addresses:
email@example.com (Note: the token will be randomly generated)
The following other email headers are also used:
Return-Path: @spemail.trello.com, e.g. firstname.lastname@example.org
Reply-To: @boards.trello.com, e.g. email@example.com
You might consider adding these domains to your address book and/or asking your network administrator to allow them.
If you're using a public email tool (such as Hotmail, Gmail, Outlook.com, etc.) and are having trouble receiving your confirmation email, try adding firstname.lastname@example.org and email@example.com to your contacts list.
Check SPAM Locally and on the Network
Emails from Trello and Atlassian can get caught in SPAM filters. Check the SPAM folder in your email inbox to see if it's there. If it's not in your local SPAM folder, ask your network administrator if the message might be blocked at the network level. Our support team can provide more information on what IP addresses to allow.
Resend Confirmation Emails
If you've been invited to join your teammates in an Atlassian cloud site, please reach out to your Admin to resend the confirmation email. Alternatively, you can trigger a password reset from https://id.atlassian.com/login/resetpassword to set a password and confirm your account.
If you haven’t received a confirmation email, please contact Trello Support and we'll check on your account to make sure you can receive emails from us. If necessary, Trello Support will remove the block. Then, log back into your Atlassian account on https://id.atlassian.com and click Resend signup link.
Checking with your Administrator
If you've tried the recommendations above and still can't receive emails from Trello and Atlassian, you may need to contact your admin to check if your domain is reachable. Using a tool such as https://toolbox.googleapps.com/apps/checkmx/ can be helpful.
If you're already logged in to Trello, you can go to https://trello.com/test_notifications to test if Trello can send email to you. You should receive a message immediately that the email was sent. The email will originate from firstname.lastname@example.org.
NOTE: You can only use this method if you are logged in to Trello. This will not work if you are not getting password reset emails.
Lotus Notes Users
Lotus Notes includes a built-in web browser that is not supported by Trello. If you are using Lotus Notes and are having trouble confirming your email address, first resend the email to your account, then copy the confirmation link in the email and open it in a supported browser.