No new database, no list building, no CSV round trips. Mailvern works with the sheet you already maintain.
One click from the Google Workspace Marketplace. Nothing to download, no account to create — you sign in with the Google account you already use.
Launch Mailvern from Extensions → Mailvern. The sidebar reads your header row automatically, so every column becomes available as a field.
Build rules like Payment = Pending, Status = Approved or Score > 80 using equals, contains, does not contain, greater than and less than — then preview exactly which rows match before anything sends.
Send now, schedule for later, or turn on Auto Run so new matching rows are emailed automatically — with duplicate protection on.
Conditions select the rows, the editor writes the email, Gmail delivers it, and the sheet records the result.
Q3 — client invoices.gsheet
| Client | Amount | Payment | |
|---|---|---|---|
| Aarav Mehta | aarav@northloop.co | $1,240 | Pending |
| Sara Bright | sara@brightlabs.io | $860 | Paid |
| Devika Rao | devika@kadence.in | $2,100 | Pending |
| Tom Whitfield | tom@fieldwork.dev | $430 | Paid |
| Neha Kapoor | neha@sparkhr.com | $1,595 | Pending |
Condition
Matching rows
0of 5
Paid rows are skipped. Nothing leaves your sheet.
Condition builder
Supported operators
Multi-condition AND / OR groupsComing soon
27 rows match — everyone else is skipped.
Subject: {{Invoice}} is due on {{Due Date}}
Hi {{First Name}},
A quick note that invoice {{Invoice}} for {{Amount}} is still showing as pending on our side.
Pay invoiceInstall Mailvern, open a spreadsheet you already use, and send your first conditional campaign today.
3-day trial on paid plans · Works with Gmail and Google Workspace