Terms of service
Mail Merge Pre-flight Check is a Google Workspace™ editor add-on for Google Sheets™, published by AppGarden (appgarden.co.uk). Installing or using it means you accept these terms.
What you are buying
The Free tier is unlimited checks of any list with template, every finding and explanation, click-to-cell, the readiness badge, preview of 5 recipients + the 3 worst, guide links and Remove pre-flight tabs, with no account and no expiry. The Pro tier adds the Ready to send + Excluded tabs, suppression exclusion, preview of every recipient + Preview tab, batches by quota, report tab + CSV, saved campaigns + Re-check last list and mail-server lookup, for £29 a year or £4 a month, and covers 3 activations — 3 Google accounts, each able to use the licence across every spreadsheet in that account.
Payment and merchant of record
Paddle.com Market Limited is the merchant of record for all purchases, handles payment processing and tax, and appears on your card or bank statement. AppGarden fulfils the licence; Paddle handles the money.
Refunds
A full refund within 30 days of any payment, for any reason. See the refund policy for how to ask for one.
Licence and activations
A Pro licence key activates on up to 3 Google accounts. Deactivate one from the sidebar to free a slot for another. The licence is for your own use across the spreadsheets you own or can edit; it is not for resale or for issuing sub-licences to other people.
Your source tab is never touched
The add-on only reads the list tab; every output goes to new tabs. “Remove pre-flight tabs” deletes the generated tabs, is free in every tier, and does not lapse if a Pro licence is cancelled or expires.
What the add-on does and does not do
It reads a recipient list and an email template, explains its findings, and writes the output tabs described in the guide when you ask it to. It never sends email. It does not guarantee that any particular address exists or that any particular send will succeed — it checks the merge, it does not verify deliverability. Suggested typo fixes are suggestions, accepted per domain, never applied silently.
Google's own terms
Use of this add-on is also subject to Google's own terms for Google Workspace™ Marketplace add-ons and the Google Terms of Service. Nothing here overrides those. Mail Merge Pre-flight Check is published by AppGarden and is not affiliated with Google.
Limitation of liability
The add-on is provided as-is. AppGarden is not liable for indirect or consequential loss arising from its use, to the fullest extent the law allows. Nothing in these terms limits liability that cannot lawfully be limited.
Changes
These terms may be updated from time to time; material changes will be described on this page. Continuing to use the add-on after a change means you accept the update.