Hello @ChristyF88 ,
Based on what you're describing, the safest methodology would be to re-confirm their permissions. To do this, you'll want to setup your confirm-opt in emails through the My Account page. From there, you can send out a reconfirmation email to all of your contacts. Contacts will receive the email, click the link, and be able to reconfirm that they've given you permission to email them.
Otherwise, I'd advise speaking with our Review team to see what they'd recommend for approaching this. If all of your contacts are still active clients of your organization, you may not need to worry about the extra precautions. However it'd still be best to confirm that with Review to ensure you're being fully compliant with your contacts' permissions.
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