Mergeline
One email, sent personally to everyone on your list.
Mergeline is mail merge for Gmail. Write once, and each person gets their own email from your Gmail, at a safe pace, with follow-ups that stop when they reply.
60 emails a day free. No card, no branding. Your lists never leave your browser.
Hi {{FirstName|there}},
I saw {{Company}} is hiring and wanted to share something that could help your team.
Worth a short call next week?
- Jane DoeReplied on TuesdayFollow-ups stopped
- John DoeSent Monday, 9:14Follow-up Thursday
- 58 more queued, next in 2 minutes
How it works
From a list to a sent campaign in a few minutes, without leaving Gmail.
Add your list
Paste addresses, drop a CSV or Excel file, link a Google Sheet, or collect people from a Gmail search. Duplicates and typos are caught for you.
Write once
Use merge tags with fallbacks, or start from a template. Preview the exact email each person will get.
Add follow-ups
Up to 7 follow-ups in the same conversation. They stop on their own for anyone who replies.
Press Send
Mergeline sends through your Gmail at a safe pace. Every email lands in your Sent folder.
Reads like you wrote it for one person
No Bcc, no newsletter look. Just normal emails from you, sent carefully.
Personal, one by one
- Tags like {{FirstName|there}} fill in each person’s details, with a fallback when a cell is empty.
- Whole sentences can show only for the people they fit.
- Preview the exact email every person will get before you send.
- Start from 37 researched templates, or write your own.
Safe for your account
- Random gaps between emails and a daily cap you choose.
- Slow start for new or quiet Gmail accounts.
- Send only during set hours, in your time zone or each person’s.
- Pauses by itself if too many addresses bounce.
- Checks before you send: missing tags, spam-filter phrases, too many links.
Private by design
- Lists, messages and results stay in your browser.
- No tracking pixels or link redirects in your emails.
- Nothing is written into your inbox: no report labels, no summary emails.
- Optional AI writing uses your own OpenAI, Anthropic or Gemini key, or your browser’s built-in model.
Everything a campaign needs
- Lists from pasted addresses, CSV or Excel, a Google Sheet, or any Gmail search.
- A Mergeline button next to Send in Gmail.
- Subject line A/B tests, Cc, Bcc and attachments, or personal drafts to review.
- New rows in a linked sheet get the email automatically.
- Reports, CSV export and a do-not-email list that remembers unsubscribes and bounces.
Simple pricing
Free for small sends. Pro when you need follow-ups and more volume.
Free
$0
Free forever, no card.
- 60 emails a day
- Merge tags and conditional text
- 12 starter templates
- Reply, bounce and opt-out detection
- Address check
- Gmail compose button
- No branding added
Pro Follow-ups
$12 /month$99 /year
Billed monthly. Cancel in one click.About $8.25 a month, billed yearly.
- Up to Gmail’s own daily limit
- Up to 7 follow-ups that stop on reply
- Scheduling and sending hours
- Subject A/B tests
- Cc, Bcc and attachments
- Gmail drafts mode
- Lists from a Gmail search
- Auto-add new sheet rows
- AI writing and 25 more templates
- Use it on up to 3 browsers
Prices in US dollars. Checkout by Paddle, our merchant of record, which adds sales tax where required. 14-day refund on your first payment.
Questions
Is Mergeline free?
Yes. The free plan sends up to 60 emails a day with merge tags, conditional text, 12 templates, reply and bounce detection and the address check. It adds no branding to your emails and needs no card.
Does Mergeline see my contacts or my emails?
No. Your lists, messages and results are stored in your browser. Emails go from your browser straight to Gmail in your own account. Mergeline has no server that receives them. The only thing our server ever sees is your license key, if you buy Pro.
Will people know it was a mass email?
Each person gets their own normal email, addressed only to them. There is no Bcc, nobody sees the other addresses, and every email shows up in your Sent folder like one you typed yourself.
How do follow-ups work?
With Pro you can add up to 7 follow-ups. Each one is sent in the same conversation after the number of days you choose, and stops automatically for anyone who replies.
Is it safe for my Gmail account?
Mergeline sends at a human pace: random gaps between emails, a daily cap you choose, a slow start for new or quiet accounts and optional sending hours. It pauses by itself if too many addresses bounce, and never emails anyone on your do-not-email list.
How many emails can I send a day?
Free sends up to 60 a day. Pro sends up to Gmail's own daily limit, which is about 500 a day for a personal Gmail account and 2,000 for Google Workspace.
Do you track opens?
No. Mergeline adds no tracking pixels or link redirects, which helps your emails reach the inbox. It tells you who replied instead, which is the number that matters.
Does my browser need to stay open?
Yes, Mergeline sends from your browser, so a campaign runs while it is open. If you close it, sending picks up where it left off when you open it again.
Which browsers does it work in?
Chrome, Edge and Brave, with a Gmail or Google Workspace account.
Can I cancel anytime?
Yes, in one click from Manage subscription. Pro keeps working until the end of the period you paid for. Your first payment is refundable for 14 days. See the refund policy.
Send your first campaign today
Free for 60 emails a day. Install it, open Gmail, and your first personal emails can go out in minutes.