MergeWriter

Insert personalized email templates with dynamic fields into webmail interfaces using Google Sheets data and Gmail, Office 365, Zoho Mail or cPanel RoundCube emails.

MergeWriter – Personalized Email at Scale

Turn Google Sheets into a personalization engine for your emails.

MergeWriter is a Chrome extension for sending personalized emails one at a time using data from your Google Sheet. It is built for manual outreach, small-batch sending, testing messaging, customer discovery, and relationship-based communication where accuracy and personalization matter more than volume. Instead of bulk automation, MergeWriter helps you craft thoughtful, individualized emails directly inside your webmail interface.

No bulk sending. No complicated systems. Just clean, personalized outreach done one email at a time.

Perfect for sales outreach, hiring, partnerships, customer success, customer discovery, event invitations, follow-ups, and testing what messaging actually works.

MailChimp and other email newsletter platforms force you to update your DNS to use their system. With MergeWriter, you use your own email, sending emails directly out of your own inbox.

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NOTE:
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If you see a message that says “Proceed with caution. This extension is not trusted by Enhanced Safe Browsing,” it’s because MergeWriter is a new extension and requires access to supported email platforms to function correctly. The requested access is limited to Google Sheets and webmail services such as Gmail, Outlook, and Zoho Mail so the extension can open a compose window and insert your personalized data. MergeWriter does not send emails automatically. Emails are only sent when you manually review and click Send yourself.

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HOW MERGEWRITER WORKS
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Connect your Google Sheet
- Link your spreadsheet containing names, companies, email addresses, or any custom fields.

Create email templates
- Write reusable templates using merge tags like {{first_name}}, {{company}}, {{domain}}, or any column name in your sheet. Subject lines and message bodies can both be dynamic.

Personalize and send
- Open your email, click MergeWriter, choose a recipient and template, and insert a fully personalized message instantly.

Your email is ready to send in seconds.

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SUPPORTED EMAIL PLATFORMS
MergeWriter works directly inside your existing email tools:
- Gmail
- Outlook Office 365
- cPanel Webmail (Roundcube)
- Zoho Mail

If there is a subject line and message editor, MergeWriter can usually work with it.

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KEY FEATURES
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- Google Sheets Integration
- Connect your Google Sheet in minutes
- Pulls live recipient data
- Optional automatic creation of an “Email Status” column
- Track sent vs unsent contacts
- Fast searching across recipients
- Template System
- Create reusable email templates
- Visual merge tag detection
- Preview personalized emails before inserting
- One-click subject and body insertion
- Supports any number of custom fields

Smart Personalization
Use merge tags such as:
{{first_name}}
{{last_name}}
{{company}}
{{domain}}
{{custom_field}}

Pro users can also use conditional logic for advanced personalization.

Sidebar Interface
- Persistent side panel that stays open while you work
- View and select recipients instantly
- Filter between sent and unsent contacts
- Insert subject, body, or full email with one click

Performance Optimized
- Designed for large Sheets (500+ rows)
- Fast search and filtering
- Reliable compose detection across platforms
- Optimized auto-compose and manual insert flows

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FREE VS PREMIUM
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Free Plan
- Includes everything you need to try MergeWriter:
- 1 Google Sheet
- 1 Template
- 100 merges per month
- Basic merge fields
- All supported webmail platforms
- Automatic status tracking
- Sample data included

Pro – $7/month or $77/year
- Built for teams, recruiters, agencies, and power users:
- Unlimited Google Sheets
- Unlimited templates
- Conditional personalization logic
- Unlimited monthly merges
- Priority support
- Annual plan saves compared to monthly

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COMMON USE CASES
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Sales & Outreach
- Personalized prospecting emails, follow-ups, and introductions.

Recruitment
- Candidate outreach based on experience, role, and skills.

Marketing
- Targeted emails by industry, segment, or campaign testing.

Customer Success
- Onboarding, renewals, announcements, and check-ins.

Customer Discovery
- Small-batch discovery emails to learn what customers want.

Events & Networking
- Invitations and follow-ups for communities, meetups, and conferences.

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PRIVACY & SECURITY
- We take your data seriously:
- Secure Google OAuth authentication
- Access limited to your own Google Sheets
- No external storage of your email content
- No tracking or reselling of user information
- Manual, user-initiated insertion only

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GETTING STARTED
- Install MergeWriter
- Try the included sample data
- Connect your Google Sheet
- Create your templates
- Start sending personalized emails

WHY MERGEWRITER
- Save time without automation overload
- Increase reply rates with personalization
- Stay inside your existing workflow
- Stay organized with Sheets-based tracking
- Avoid bulk mail tools
- Keep outreach human

Try MergeWriter free with 100 merges per month.
Upgrade anytime for unlimited outreach power.

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CHANGELOG
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v1.0.11
Fixed license activation "Failed to Fetch" error
Fixed OAuth error recovery with timeout and retry button
Fixed duplicate sheet/template creation on install
Fixed malformed URL pattern in manifest
Fixed webmail permission handling
Changed auto-compose to enabled by default
Tightened manifest permissions
Added missing field warnings in modal
Added "Copy Subject & Body" tooltip
Added conditional logic documentation

Version 1.0.10
Major reliability fixes for Gmail auto-compose
Improved compose window detection and stability
Fixed emails closing, drafts issues, and discard dialogs
Improved Outlook and Zoho compose handling
Fixed premium license recognition and merge limits
Added extensive selector fallbacks for Gmail and Outlook
Improved logging and diagnostics

Version 1.0.9
Fixed compose windows closing in Gmail, Outlook, and Zoho
Resolved Gmail “Error saving draft” issues
Eliminated Outlook “Discard Message” dialog

Version 1.0.8
Removed preview modal in auto-compose mode
Users now review emails directly in the compose window

Version 1.0.7
Added auto-compose support for cPanel / Roundcube

Version 1.0.6
Added auto-compose support for Zoho Mail

Version 1.0.5 and earlier
Improved Gmail contact popup handling
Added Outlook compose selector support
Introduced configurable compose delays
Added auto-compose detection and safeguards
All updates maintain backward compatibility.

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Try MergeWriter free with 100 merges per month.
Upgrade anytime for unlimited outreach power.
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