Issues with Invitations?
From Control Panel, you can easily invite people at your organization to use Raiser's Edge NXT. However, things may happen between Raiser's Edge NXT and a recipient's email inbox that hinder their getting in. If that happens, there are some things to check out based on your issue.

If someone doesn't receive their invitation, verify you have their correct email address. From Security, you can resend an invitation and update the recipient's email address if necessary. For information, see Users and Invitations.
If the email address is correct, check your organization's email filters or the recipients junk mail to see if it was marked as spam. To ensure people at your organization receive their invitations, make sure your email servers allow messages from Blackbaud.
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Set your email server, proxy server, and firewall to allow email from @blackbaud.com.
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Whitelist this Internet protocol (IP) range on your email servers or network appliance:
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205.139.104.0/22 (205.139.104.1 - 205.139.107.254)
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If someone tries to access Raiser's Edge NXT but gets Blackbaud's company website instead, they need to first accept their invitation. If someone accepted their invitation but can't successfully log in, make sure they use the email address and password used to set up their Blackbaud account.
Tip: To create an account with Blackbaud, visit Blackbaud's website and select Sign in in the upper right corner.