Built for teams that send professional email at scale, without sacrificing simplicity or security.
Merge fields, conditional blocks, and smart tokens — every recipient gets a unique, personal email, not a mass blast.
Drag and drop a CSV or Excel file. Auto-detects columns, maps merge fields, and previews the first email instantly.
Queue your campaign to send later. Set a date and time, close Outlook, and Mail Merge handles the rest. (Starter+)
Attach different files to each recipient based on CSV columns. Invoices, contracts, personalised PDFs — per row. (Starter+)
Know exactly who opened, who clicked, and who bounced. Full campaign analytics in the add-in. (Pro)
Edit your recipient CSV directly in Outlook — no need to open Excel. Add rows, fix typos, reorder columns. (Pro)
Install once from Microsoft AppSource. From there, it lives right inside Outlook — no browser tabs, no third-party sites.
Upload a CSV or Excel file, paste emails directly, or import from your Outlook contacts. Mail Merge maps your columns to merge fields automatically.
Write your email in Outlook's native compose window. Insert personalisation tokens like {{first_name}} anywhere in the subject or body.
Preview the first email, confirm the recipient count, and hit send. Or schedule for later. Mail Merge uses Microsoft Graph to send each email individually from your mailbox.
Start free. Upgrade only when you need to. No contracts, no seat minimums.
Your CSV and email content never leave your Microsoft 365 environment.
Authentication is handled entirely by Microsoft. No passwords stored anywhere.
Sends are batched and throttled to stay within Microsoft's Graph API limits.
Only requests the Graph API scopes it actually needs — no broad admin consent required.
Install from Microsoft AppSource in under two minutes. No credit card, no IT ticket, no waiting.