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Mail Merge One

No sheet selected

Pick who your merges send from. Add an alias with the ➕ option in the list.

Email Template
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Email Content
Auto-template Custom HTML

Use {{name}} to personalise. Your message is automatically placed inside your chosen template.

Ready to Send
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To send
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Already sent
Ad-hoc Recipients

Add extra recipients for this send only.

Also save to active sheet
Select Email Template

Tap a template to set it active. Tap Edit to open it in the Settings editor.

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Create Custom Template
Unsubscribe Link

Paste this placeholder into your HTML template wherever you want the unsubscribe link.

{{unsubscribe}}
PDF Folders

Tick the folders to include PDFs from. You can select multiple.

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Active Contact Sheet

Tick the sheet to use, link an existing one, or create a new one.

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Import Contacts
Add Recipient
Recipient List
Manage

Clears Sent/Failed markers so you can re-send to everyone.

Appearance
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HTML Template Editor
No template selected — go to Templates tab to choose one

Use {{body}}, {{name}}, and {{unsubscribe}} as placeholders.

HTML Code
Live Preview
Sender Options

Leave blank to keep in Sent folder normally.

Send Options
Skip already-sent recipients
Signature Settings

Used in the plain-text version of every email.

Unsubscribe Notifications
Address Book

A separate sheet just for one-off contacts you occasionally email — pick from it via checkboxes when composing, without a mailing list.

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Google Account

Connect your Google account once — access stays connected from then on. No URL or setup needed, ever.

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Support

Mail Merge One is free to use. If it saves you time, you can chip in to help keep it running and maintained — no pressure, genuinely.

☕ Support on Ko-fi
✉️ Send-from aliases

Pick who your merges are sent from. An alias only works if it's a verified "Send mail as" in your Gmail — otherwise sends quietly go out from your normal address.


Tip: send it to a different mailbox (not the alias itself), so you can clearly see which address it came from. Then tap “Test” on an alias above.

📋 My Mail Merge Sheets
📁 My Drive Folders
📖 Address Book
👁️ Email Preview
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