Importing your data
If you import a large number of subscribers, I'll temporarily disable your account so Buttondown can review the imported emails and make sure they're all up to code. The process shouldn't take more than a few hours!
Navigate to your settings page and click Import subscribers! You'll be prompted to upload a CSV:
Once you do so, you can map each column in your CSV, allowing you to bring in subscribers while keeping their existing tags, join dates, and metadata.
I'm importing my subscribers from another newsletter service. Do they have to confirm their email address again?
Assuming that the subscribers have already consented to receiving email (via double-opt-in or some other mechanism provided by your previous subscriber), no! GDPR-wise, their existing consent carries over to Buttondown.
Adding a listserv?
Be sure that folks on the listserv are expecting the subscription: if one of them clicks to unsubscribe from the newsletter, it will affect the entire listserv (since from Buttondown's perspective, the listserv is a single subscriber.)