> ## Documentation Index > Fetch the complete documentation index at: /help/llms.txt > Use this file to discover all available pages before exploring further. # Connect an email inbox > Add email as one more touch point in your campaigns. Campaigns can send an email next to their LinkedIn steps: a short, personal note from your own inbox, never a bulk send. You connect Gmail, Outlook or any other inbox (IMAP) once, then add a **Send email** step on the canvas (see [Write and send emails](/help/campaigns/send-email.md): plain text, rich text with pictures and GIFs, or HTML). > [!NOTE] > > **Pro plan.** Email is part of Pro and Agency. Each inbox is a paid add-on (US\$7 a month), not part of the free trial: first add inboxes in **Settings > Billing**, under **Add-ons**, then connect them here. On Starter, **Email inboxes** shows that email is part of Pro. Inboxes you already connected keep working. See [Add-ons](/help/account/add-ons.md). ## Connect an inbox **1. Open Connect accounts** In the menu on the left, click **Connect accounts** and scroll down to **Email inboxes**. **2. Connect** Click **Connect an inbox**, then **Continue with Google**, **Continue with Microsoft** or **Other inbox**. You sign in on Google's or Microsoft's own page and allow access; your password stays with them. **3. Done** You come back to Kerux and the inbox shows as **Connected**. > [!NOTE] > > On the Google or Microsoft page you may see the name of Kerux's secure email partner asking for access. That is normal: it is the service Kerux uses to connect inboxes, and your password is never shared with Kerux. ### Gmail with an app password (instead of signing in) If you would rather not sign in with Google, you can connect Gmail with an **app password**: a 16-letter password Google makes for one app, which you can remove at any time without changing your Google password. Click **Connect an inbox**, then **Connect Gmail with an app password**, and: 1. In your Google account, turn on **2-Step Verification** (if it isn't on yet). 2. Open [Google app passwords](https://myaccount.google.com/apppasswords), type **Kerux** as the name and click **Create**. 3. Copy the 16 letters Google shows. Enter your Gmail address, paste the app password and click **Connect inbox**. Kerux uses the app password once to connect the inbox and never stores it. If you don't see **App passwords** in your Google account, 2-Step Verification is off, or your Google Workspace admin turned app passwords off (ask them). A Gmail inbox connected this way sends and receives email only; to use its calendar, connect it in **Meetings > Connected calendars**. ## Connect its calendar Each inbox is a row with how many emails it sent today and its calendar (**Calendar on**, **Calendar off** or **Calendar needs permission**). Click **Manage** on an Outlook inbox (or a Gmail inbox connected before November 2026), then **Connect calendar**, and Kerux knows when a contact books a meeting with you, so your campaigns can stop writing to them. Same connection, no extra cost. See [Meetings booked by contacts](/help/campaigns/meetings.md). ## How emails are sent * From the inbox itself, so they look like any email you write. * A few a day: each inbox has a daily limit (40 by default, change it next to the inbox), with a few minutes between two emails. * Only inside the campaign's hours (Monday to Friday, 9:00 to 18:00 unless you changed them in the campaign's settings). * With one short line on how to stop the emails and your postal address at the end. Add your postal address in **Settings > Sending rules** before your first email campaign: without it, campaign emails wait. See [Write and send emails](/help/campaigns/send-email.md#the-footer-and-the-unsubscribe-link). * Never with a hole: an empty name or company uses your default (for example "there" for a first name), and any other empty variable stops the contact, which shows what is missing. See [Variables](/help/campaigns/variables.md#when-a-contact-has-no-value). * If Kerux can't confirm an email went out (for example, the inbox didn't answer in time), it is never sent again on its own: it waits in **Home > Tasks** (under **Unconfirmed sends**) for you to check the inbox's Sent folder and decide. ## Opens and clicks Kerux tracks who opens your campaign emails and clicks their links, so a campaign can follow up only with the people who engaged (**If they react** step) or start another one (**Email opened**, **Email link clicked**). It's **on by default** for each campaign; turn it off in the campaign's **Settings** with **Track email opens and clicks**. Opens are an estimate: some mail apps hide them, and others open emails on their own. See [Email opens and clicks](/help/campaigns/email-opens-and-clicks.md) for what you see, how to use it, and privacy. ## Which inbox sends In the **Send email** step you can pick the inbox. Left on automatic, the email goes from the inbox of the person whose LinkedIn account runs that contact, or from the first connected inbox. ## Replies When a contact answers your email, the reply shows in their timeline and stops the campaign for them, like a LinkedIn reply (unless you turned "stop on reply" off in the campaign's settings). It counts whether they write from their email or from any other address Kerux knows for them. ## Every email on the contact page Emails you send by hand from the connected inbox (outside Kerux) to a contact show on the contact's history too, as **Email sent**, with the subject and the start of the text. They never count as a reply and never move a campaign. Campaign emails already show there, so they aren't added twice (an email with the same subject as a campaign email, within 30 minutes of it, counts as that campaign email; another subject is always added), and emails with people who aren't contacts in your workspace aren't stored. Replies from contacts, and the emails you send them, also show in the [inbox](/help/inbox/use-the-inbox.md), where you can answer them from the same inbox. ## Common problems > [accordion] There is no Connect an inbox button > > The **Email inboxes** section shows why instead. In the free trial, click **Choose a plan** first. On a paid plan, you have no paid inbox left to connect (you haven't added one yet, or every inbox you pay for is already connected): click **Add an inbox**, add one more in **Add-ons**, then come back and connect it. See [Add-ons](/help/account/add-ons.md). > [accordion] An inbox says Disconnected by Kerux because it isn't paid for > > Your organization has more inboxes connected than it pays for (for example, you cancelled an inbox add-on and the period you paid for ended). Kerux disconnects the extra ones, the most recently connected first, and keeps the oldest. To use it again, click **Add an inbox**, add one in **Add-ons**, then remove the disconnected inbox and connect it again. See [Stop paying for an inbox](/help/account/add-ons.md#stop-paying-for-an-inbox-or-a-whatsapp-number). This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.