Gmail add-on

Your warmup, in the Gmail sidebar.

Check how warmup is going, pause it, change the daily volume, and see whether the message you have open is a warmup email, without leaving your inbox. It never reads your mail.

Listing in review with Google. It will appear in the Google Workspace Marketplace once approved.

The Warmerly dashboard beside the Warmerly Gmail add-on sidebar showing its Connect card

The Warmerly dashboard (demo data) and the add-on sidebar in Gmail.

What it does

Warmup runs on Warmerly’s servers all day. The add-on puts the part you check most, and the controls you reach for when something looks off, next to your inbox.

Warmup status at a glance

See whether warmup is running, which day it is on, today's sent and received counts, and the mailbox's health score, in the sidebar next to your inbox. No tab switching, no dashboard login.

Pause, resume, set the volume

Pause warmup the moment something looks wrong, resume it when it is fine, and choose how many warmup emails go out per day. The same controls as the Warmerly dashboard, one click from the message you are reading.

Is this a warmup message?

Open any message and the sidebar tells you whether it is one of Warmerly's own warmup emails. Warmup mail passes between mailboxes in the warmup network, so this saves you wondering whether a stray message needs an answer.

Where it landed

For a warmup message, the sidebar shows whether it reached the inbox, spam or promotions, and whether it was opened or replied to. That is the placement signal warmup is built to improve.

Connect in one step

The first time you open the sidebar it offers a Connect button. You sign in to Warmerly, confirm, and the sidebar starts showing your mailbox. If the Gmail address is not yet a Warmerly mailbox, it shows a button to connect it.

Disconnect any time

Press Unlink in the sidebar and the connection is revoked immediately. A teammate removed from your workspace, or a suspended account, stops working through Gmail on the next request.

How it works

Step 1
Install the add-on
Add Warmerly from the Google Workspace Marketplace. It appears as an icon in the right-hand side panel of Gmail.
Step 2
Connect your Warmerly account
Open the sidebar, press Connect, sign in to Warmerly and confirm. A free Warmerly account is enough.
Step 3
Read your warmup status
The sidebar shows the mailbox for the Gmail address you are signed in to: warmup on or off, ramp day, today's volume and health score.
Step 4
Control it from the message you are reading
Pause or resume warmup, change the daily volume, or check whether the open email is a warmup message. Everything is also written to your Warmerly audit log.

The Warmerly sidebar's Connect card next to its open-message check reading 'This is not a Warmerly warmup message'

A sidebar, not a second inbox

The sidebar is about one thing: the email account in front of you. It does not list your other mailboxes, your leads or your campaigns; those stay in the Warmerly app, where they belong.

Open a message and it answers a single question about it: is this one of Warmerly’s warmup emails? Either way it shows the answer and nothing else about the message.

Private by design

The add-on is only a sidebar. It asks Google for three permissions, none of them a permission to read your mailbox, and it shows you exactly why.

What it asks for	Why
Your Google account id and email address	To know which Gmail account you opened the sidebar on, so it can be linked, with your consent on warmerly.com, to your Warmerly account.
Run in Gmail	Required for any Gmail add-on to appear in the sidebar at all.
The Message-ID header of the message you have open	To check whether that one message is a Warmerly warmup message. Only that one header is requested; no body, subject, sender or recipients. It is compared with Warmerly's own warmup records and discarded.

No card ever shows a message’s subject, body, snippet or sender, and none of it is stored.
It cannot send, delete, label or change email.
Writes from the sidebar go through the same rate limits and billing checks as the dashboard.

The full wording is in our privacy policy, section 5.

Questions

Can the add-on read my email?: No. It reads one thing, the Message-ID header of the message you have open, and compares it with Warmerly's own warmup records. It never reads, stores or shows a message's body, subject, sender or recipients, and it cannot send, delete or change email.
What does it ask Google for?: Three things, listed above: your Google account id and address, permission to run in Gmail, and the Message-ID header of the open message. It does not use the restricted Gmail read or modify permissions, and it never asks for access to your mailbox.
Does the add-on do the warming?: No. Warmup runs on Warmerly's servers over your mailbox's normal connection, whether or not Gmail is open. The add-on is a window onto it: it shows status and sends your pause, resume and volume choices to Warmerly.
Do I need a Warmerly account?: Yes, a free one is enough to connect. The add-on itself costs nothing; warmup follows your Warmerly plan.
It says my address is not connected as a Warmerly mailbox. What now?: The sidebar shows the mailbox that matches the Gmail address you are signed in to. If that address has not been added to Warmerly yet, press Connect this mailbox to add it in the Warmerly app, then reopen the sidebar. Other mailboxes in your workspace are managed in the Warmerly app, not listed in Gmail.
Does it work with Google Workspace and personal Gmail?: It is a Gmail add-on, so it runs wherever Gmail does, including Google Workspace accounts. Whether your organisation lets you install it is up to your Workspace admin if installs are restricted.
Is there an Outlook version?: Not today. This add-on is for Gmail only. Warmup itself works for Gmail, Outlook and custom mailboxes from the Warmerly app.
How do I disconnect it?: Press Unlink in the sidebar, or revoke the connection in Warmerly. The sidebar stops working immediately, and the link is marked as revoked.

Keep reading

Warm up first, then watch it from Gmail

Connect a mailbox in one click and watch your reputation climb. Free plan, no card required. The Gmail add-on is free with any Warmerly account.

Start warming free Continue with Google See pricing

Or book a free 15-minute setup call →

Warming up

What it does

Warmup runs on Warmerly’s servers all day. The add-on puts the part you check most, and the controls you reach for when something looks off, next to your inbox.

Warmup status at a glance

See whether warmup is running, which day it is on, today's sent and received counts, and the mailbox's health score, in the sidebar next to your inbox. No tab switching, no dashboard login.

Pause, resume, set the volume

Is this a warmup message?

Where it landed

For a warmup message, the sidebar shows whether it reached the inbox, spam or promotions, and whether it was opened or replied to. That is the placement signal warmup is built to improve.

Connect in one step

Disconnect any time

Press Unlink in the sidebar and the connection is revoked immediately. A teammate removed from your workspace, or a suspended account, stops working through Gmail on the next request.

How it works

Step 1

Install the add-on

Add Warmerly from the Google Workspace Marketplace. It appears as an icon in the right-hand side panel of Gmail.

Step 2

Connect your Warmerly account

Open the sidebar, press Connect, sign in to Warmerly and confirm. A free Warmerly account is enough.

Step 3

Read your warmup status

The sidebar shows the mailbox for the Gmail address you are signed in to: warmup on or off, ramp day, today's volume and health score.

Step 4

Control it from the message you are reading

Pause or resume warmup, change the daily volume, or check whether the open email is a warmup message. Everything is also written to your Warmerly audit log.

A sidebar, not a second inbox

The sidebar is about one thing: the email account in front of you. It does not list your other mailboxes, your leads or your campaigns; those stay in the Warmerly app, where they belong.

Open a message and it answers a single question about it: is this one of Warmerly’s warmup emails? Either way it shows the answer and nothing else about the message.

Private by design

The add-on is only a sidebar. It asks Google for three permissions, none of them a permission to read your mailbox, and it shows you exactly why.

What it asks for	Why
Your Google account id and email address	To know which Gmail account you opened the sidebar on, so it can be linked, with your consent on warmerly.com, to your Warmerly account.
Run in Gmail	Required for any Gmail add-on to appear in the sidebar at all.
The Message-ID header of the message you have open	To check whether that one message is a Warmerly warmup message. Only that one header is requested; no body, subject, sender or recipients. It is compared with Warmerly's own warmup records and discarded.

No card ever shows a message’s subject, body, snippet or sender, and none of it is stored.

It cannot send, delete, label or change email.

Writes from the sidebar go through the same rate limits and billing checks as the dashboard.

The full wording is in our privacy policy, section 5.

Questions

Can the add-on read my email?

No. It reads one thing, the Message-ID header of the message you have open, and compares it with Warmerly's own warmup records. It never reads, stores or shows a message's body, subject, sender or recipients, and it cannot send, delete or change email.

What does it ask Google for?

Three things, listed above: your Google account id and address, permission to run in Gmail, and the Message-ID header of the open message. It does not use the restricted Gmail read or modify permissions, and it never asks for access to your mailbox.

Does the add-on do the warming?

No. Warmup runs on Warmerly's servers over your mailbox's normal connection, whether or not Gmail is open. The add-on is a window onto it: it shows status and sends your pause, resume and volume choices to Warmerly.

Do I need a Warmerly account?

Yes, a free one is enough to connect. The add-on itself costs nothing; warmup follows your Warmerly plan.

It says my address is not connected as a Warmerly mailbox. What now?

The sidebar shows the mailbox that matches the Gmail address you are signed in to. If that address has not been added to Warmerly yet, press Connect this mailbox to add it in the Warmerly app, then reopen the sidebar. Other mailboxes in your workspace are managed in the Warmerly app, not listed in Gmail.

Does it work with Google Workspace and personal Gmail?

It is a Gmail add-on, so it runs wherever Gmail does, including Google Workspace accounts. Whether your organisation lets you install it is up to your Workspace admin if installs are restricted.

Is there an Outlook version?

Not today. This add-on is for Gmail only. Warmup itself works for Gmail, Outlook and custom mailboxes from the Warmerly app.

How do I disconnect it?

Press Unlink in the sidebar, or revoke the connection in Warmerly. The sidebar stops working immediately, and the link is marked as revoked.