Fundraise Up has a native Zapier app — and Zapier's directory even lists a direct, pre-built Fundraise Up + LettrLabs combination, which makes this one of the easiest integrations to set up in this help center.
Before you start
A LettrLabs API key and an Integration Order created for Zapier (Setup Guide: Zapier, Steps 1–2).
A Fundraise Up account with admin access.
Step 1: Connect Fundraise Up inside Zapier
In Zapier, start a new Zap and search for Fundraise Up.
Authenticate with your Fundraise Up account.
Step 2: Choose your Fundraise Up trigger
New Donation — the most common trigger, for a thank-you mailer to first-time or recurring donors.
New Supporter — fires when a new supporter record is created, useful for a welcome mailing independent of the gift amount.
Recurring Donation Updated — useful for donor-retention plays tied to subscription changes.
Step 3: Add a LettrLabs action
Add Recipient to Integration Order is the standard choice for donor thank-you mail. Consider also wiring this same trigger to the Revenue Attribution with Zapier + CRM Integration pattern (send the donation amount to LettrLabs as a conversion event) if you want mailers attributed against acquisition revenue, not just triggered by it.
Step 4: Test, then go live
Test the Zap, confirm the sample recipient in LettrLabs, publish, then activate.
Want help wiring a new-donor thank-you campaign for Fundraise Up? Reach out to our team.