To obtain and update consent efficiently, follow these steps:
Use Double Opt-In: Implement a double opt-in process where users confirm their subscription through a follow-up email. Segmentation: Segment your email list based on the date of the last consent and prioritize those who need updates. Reconfirmation Campaigns: Periodically run reconfirmation campaigns asking subscribers to update their preferences. Automated Tools: Utilize email marketing software that can automate the process of updating consent records.