Mail Merge Across Multiple Gmail Accounts from Sheets

Run a mail merge across multiple Gmail accounts using Google Sheets. Organize recipients, personalize each send, and stay within Gmail's daily sending limits.

How to Run a Mail Merge Across Multiple Gmail Accounts with Google Sheets

When campaigns grow, a single Gmail account’s daily limit can get in the way. Spreading a mail merge across more than one Gmail or Workspace account — for example, separate brand or team mailboxes — lets you keep sending personalized email while respecting each account’s limits. Mail Merge for Gmail and Google Sheets keeps the workflow organized in a spreadsheet so each account’s campaign stays personalized and trackable.

This page explains how to do that legitimately, within Google’s limits and terms.

Try Mail Merge for Gmail and Sheets →

Why one Gmail account isn’t always enough

A single mailbox can only send so much per day. Teams and agencies often run into this when:

they manage separate brands, products, or clients, each with its own mailbox;
different team members send from their own addresses;
a legitimate, consented campaign is larger than one account’s daily allowance.

Using more than one account in these cases is normal. What matters is that each account stays within its own sending limit and that every recipient genuinely belongs on the list.

Understanding Gmail and Workspace sending limits

Each Gmail or Google Workspace account has a daily sending cap that depends on the account type, and exceeding it can pause sending or affect deliverability. Treat each mailbox as a separate bucket with its own limit. Mail Merge for Gmail and Sheets sends through Google Apps Script, where the quota is about 100 recipients a day on a @gmail.com account and 1,500 on Google Workspace, reset 24 hours after the first send. Plan your batches so no single account is pushed past its allowance, and pace sends through the day rather than firing everything at once. Always check Google’s current limits for your account type, since they change.

Important: Splitting across accounts is a way to organize legitimate sending within limits — not a way to evade them. Do not buy lists, send to people who have not consented, or rotate accounts to get around Google’s Terms of Service or anti-spam policies.

Organizing recipients in Google Sheets for multi-account sends

A spreadsheet makes multi-account sending manageable:

Keep your list in one Google Sheet with Email, First Name, Last Name and Mail Merge as the first four columns (the add-on looks for them there; Launch can create them), then company and your other personalization fields.
Give each sending account its own tab, or its own copy of the Sheet shared with that account. The add-on sends every row from the Google account that runs it, so a send_from column would be ignored.
Leave the Mail Merge column empty: the add-on writes EMAIL_SENT there, and EMAIL_OPENED or EMAIL_CLICKED after you click Refresh Email Status. Replies and bounces arrive in each account’s inbox; note them in the Sheet yourself.
Keep each tab within its account’s daily limit so every account works from its own clearly defined segment.

This keeps every account’s portion of the campaign visible, balanced, and within limits.

Personalizing each campaign

Whichever account a message goes from, personalization comes from your Sheet columns. Type placeholders such as {{First Name}} and {{company}} into the Gmail draft you use as the template, matching your column headers exactly, so each recipient gets a relevant, individual message rather than an obvious bulk blast.

A simple example:

Hi {{First Name}}, following up from the {{company}} team about your request…

Sending and tracking per account

Install Mail Merge for Gmail and Google Sheets in each sending account. Each install is separate, and a paid plan is matched to the email address it was bought with, so check the plans for how many senders yours covers. The add-on sends from the Google account that runs it. If you’re signed in to several Google accounts in one browser, it may run as the wrong one, so open the Sheet in a browser profile or incognito window where only the sending account is signed in.
Write the Gmail draft in that account (the add-on only lists drafts from the account that runs it), pick it for that account’s tab, and click Send Test Email: it sends one message to you, filled with row 2’s data. Verify every placeholder.
Send in batches within the account’s daily limit (“Maximum emails per launch” helps), then click Refresh Email Status to see opens and clicks.
Repeat for the next account using its tab of the Sheet.

Because each account sends from its own mailbox, replies route back to the right inbox and open and click statuses stay separate, in each account’s own tab.

Scale personalized campaigns without losing the Sheets workflow →

Only email recipients who have consented or who clearly expect to hear from you.
Honor opt-outs and write an unsubscribe line into your draft where applicable (CAN-SPAM, GDPR, and similar rules); the add-on doesn’t add one.
Ramp new mailboxes gradually rather than sending at full volume on day one.
Keep copy genuine and specific; avoid spammy phrasing, misleading subject lines, and identical mass blasts.
Watch each inbox for bounce notices and complaints, and pause if deliverability drops.

When to consolidate vs split

If your total consented volume fits comfortably within one account’s limit, keep it simple and send from a single mailbox. Split across accounts when you genuinely operate multiple brands or teams, or when legitimate volume exceeds one account’s allowance. Let real organizational structure — not a desire to dodge limits — decide.

Multiple Gmail accounts mail merge FAQ

Can I run one mail merge across several Gmail accounts at once?

Not in one run. The add-on sends from the Google account that runs it, so each account installs it, opens the shared Sheet and sends its own tab. One tab per account keeps the segments organized so each mailbox stays within its own limit; a send_from column is ignored.

Does sending from multiple accounts get around Gmail’s limits?

No, and it should not be used that way. Each account still has its own daily limit. Splitting is for organizing legitimate, consented sending across real mailboxes — not for evading limits or Google’s Terms of Service.

Will using multiple accounts improve deliverability?

Not by itself. Deliverability depends on consent, genuine personalization, clean lists, gradual warm-up, and sensible pacing. Extra accounts only help if each is used responsibly within its limits.

How do replies work across accounts?

Each message sends from its own mailbox, so replies come back to that account. The add-on doesn’t track replies, so note them in each tab next to the Mail Merge statuses to keep the whole campaign visible in one place.

Is buying email lists okay if I split them across accounts?

No. Purchased or non-consented lists violate anti-spam rules and harm deliverability regardless of how many accounts you use. Only send to recipients who have opted in or clearly expect your message.

Keep the spreadsheet, scale the sending

You do not have to give up your Sheets workflow to send more. Organize recipients by sending account, personalize every message, respect each account’s limits, and keep your list consented and clean.