Mergeline – Mail Merge for Gmail™ with Follow-ups

Free mail merge for Gmail™. Send each person their own email from Google Sheets or CSV, with attachments and auto follow-ups.

Mergeline sends a personal copy of one email to everyone on your list, from your own Gmail account, and follows up with the people who have not replied. A simple GMass alternative: each person gets their own normal email, so there is no Bcc and no one sees the other addresses. The free plan sends up to 60 emails a day; follow-ups, attachments and scheduling are part of Pro. HOW IT WORKS 1. Add your list: paste addresses, drop a CSV or Excel file, link a Google Sheet, or collect people from any Gmail search. Duplicates and invalid addresses are removed for you, and a check spots typos and addresses that will bounce. 2. Write once, or start from a ready-made template. Tags like {{FirstName|there}} fill in each person's details, with a fallback when a cell is empty, and whole sentences can show only for people who match. Preview the exact email every person will get. 3. Add up to 7 follow-ups (Pro). They go in the same conversation and stop automatically for anyone who replies. 4. Press Send. Mergeline sends through your Gmail at a safe pace, and every email appears in your Sent folder. SAFE FOR YOUR ACCOUNT • Random gaps between emails and a daily cap you choose. • Slow start for new or quiet accounts. • Send only during set hours, in your time zone or each person's. • Pauses automatically if too many addresses bounce. • A do-not-email list: people who reply "unsubscribe" and addresses that bounce are never emailed again. • Type {{ to pick a merge tag, a fallback or conditional text as you write. • Checks before you send: missing merge tags, spam-filter phrases, too many links, long subjects. PRIVATE BY DESIGN • Your lists, messages and results stay in your browser. Mergeline has no server that sees them. • No tracking pixels or link redirects are added to your emails, and nothing is written into your inbox. • Optional AI writing uses your own OpenAI, Anthropic or Google Gemini key, or your browser's built-in model. Text goes only to the provider you pick. WORKS INSIDE GMAIL • A Mail merge button next to Send: write to several people, insert {{FirstName}} tags, pick a template, add follow-ups, schedule it or create drafts, and each person gets their own copy. • Mail merge these people: on any Gmail search or label, build a list from the people in the results. • Campaign progress next to the Gmail search box, with pause and resume. • Reply status on the threads you sent: replied, opted out, bounced, or when the next follow-up goes out, with a one-click way to stop follow-ups for one person. • Smart reply: reads the conversation and drafts a natural answer to the latest message with your own AI key, using notes you save about your business. You review it before anything is sent. MORE • Test two subject lines and see which one gets more replies. • Cc, Bcc and attachments, or create personal drafts in Gmail to review and send yourself. • Link a Google Sheet and new rows get the email automatically. • Templates, campaign reports, CSV export, and a personal first line per person written by AI. • Works in Chrome, Edge and Brave. PLANS Free: 60 emails a day with merge tags, conditional text, 12 templates, reply and bounce detection and the address check. No branding added. Pro ($12 a month or $99 a year): 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, lists from a Gmail search, auto-add from a sheet, AI writing and 25 more templates. Gmail is a trademark of Google LLC. Mergeline is not affiliated with, endorsed by or sponsored by Google.