--- title: How to connect WEB.DE to Warmy? description: Step-by-step guide to connecting your WEB.DE mailbox to Warmy using IMAP and SMTP settings, so you can start warming up your email and improving deliverability --- [Skip to content](https://support.warmy.io/knowledge/how-to-connect-to-warmy#main-content) English Show submenu for translations ![Group 1261151152.png\]](https://support.warmy.io/hs-fs/hubfs/Group%201261151152.png?width=50&height=50&name=Group%201261151152.png) Open main navigation Close main navigation - English Show submenu for translations - [Go to warmy.io](https://www.warmy.io/) [Go to warmy.io](https://www.warmy.io/) Hey there Warmer! How can we help? 🙏 - There are no suggestions because the search field is empty. 1. [Help Center](https://support.warmy.io/knowledge?hsLang=en) 2. [Connection Guide](https://support.warmy.io/knowledge/connection-guide?hsLang=en) # How to connect WEB.DE to Warmy? ## How to connect a WEB.DE mailbox to Warmy Connect your WEB.DE mailbox using its email address and an app password. Warmy sets up the sending and receiving settings for you, so there’s nothing else to configure. ### Before you start - Have your WEB.DE email address ready. - Make sure you have an available plan. Each plan covers one mailbox, so you need one unused plan for every mailbox you connect. - You’ll need an **app password** from WEB.DE — your regular WEB.DE password won’t work. Follow the steps below to create one. ### Create an app password in WEB.DE WEB.DE doesn’t allow external services to connect with your regular password. Instead, you create a separate app password just for Warmy. **Step 1. Allow POP3/IMAP access** 1. Log in to your WEB.DE account. 2. Click the icon with your initials in the top bar and choose **E-Mail-Einstellungen** (Email settings). 3. In the **E-Mail empfangen** (Receive email) section, select **POP3/IMAP**. 4. Under **POP3-/IMAP-Abruf**, turn on **POP3- und IMAP-Zugriff erlauben** (Allow POP3 and IMAP access). 5. Complete the security check by sliding the two symbols on top of each other. > **Note:** WEB.DE automatically turns this setting off again if the mailbox isn’t accessed by external apps for a long time. If Warmy stops connecting later, check that it’s still on. **Step 2. Create the app password** 1. Click the icon with your initials in the top bar and choose **Account verwalten** (Manage account). 2. Click **Login & Sicherheit** (Login & Security) on the left. 3. Scroll down and click **App-Passwörter (für externe Apps)** (App passwords for external apps). 4. Click **Neues App-Passwort erstellen** (Create new app password). 5. Enter a name, for example **Warmy**, and click **Weiter** (Next). 6. Copy the password and keep it somewhere safe — WEB.DE shows it **only once**. > ### Connect your WEB.DE mailbox > > 1. Open the **Connect a mailbox** screen: click **Connect** in the top bar, or **Add Mailbox** on the **Mailboxes** page. > 2. Select **WEB.DE** from the list on the left. If you don’t see it, type `WEB.DE` in the **Search** field. > 3. Enter your WEB.DE address in the **Email address** field. > 4. Paste your **app password** > 5. Optional: enter the name your emails should be sent from in the **‘Send from’ name** field. > 6. If you see **Select subscription**, choose the plan this mailbox should use. > 7. Click **Connect**. While Warmy checks the mailbox, you’ll see **Connection processing in progress**. This takes a few seconds. > > > *WEB.DE connection form — email address, password and an optional sender name.* > > > > *![](https://support.warmy.io/hs-fs/hubfs/image-png-Oct-12-2026-02-51-13-7956-PM.png?width=670&height=418&name=image-png-Oct-12-2026-02-51-13-7956-PM.png)* > **Connecting several mailboxes?** Click **Connect & Add New Mailbox** instead of **Connect**. The form stays open so you can add the next one right away. > > **Need help?** Use **Ask Adeline to help** or **Connection Guide** at the top of the form. > > ### After it is connected > > You’ll see **Mailbox successfully connected**, and Warmy will open your new mailbox page. Warm-up starts within about 1–2 hours, and Warmy will notify you if anything needs your attention. > > ### If something goes wrong > > #### A field is empty or incorrect > > Warmy checks the form before connecting. Fields that need attention are highlighted in red, and the message **Please fill in all important fields** appears in the bottom-right corner. Correct the highlighted fields and click **Connect** again. > > > *WEB.DE form with error messages — both the email address and password are required.* > > > > *![](https://support.warmy.io/hs-fs/hubfs/image-png-Oct-12-2026-02-51-44-6435-PM.png?width=670&height=415&name=image-png-Oct-12-2026-02-51-44-6435-PM.png)* | Message | What it means / what to do | | --- | --- | | This field is required | This box is empty. Fill in the box. | | Invalid email address | The email address format isn’t valid. Check it for typos. | | Exceeded the number of characters | The text is too long. Shorten it. | | Error: Please fill in all important fields | One or more required fields are empty or incorrect. Correct the fields highlighted in red and click **Connect** again. | #### This mailbox is already connected This WEB.DE address is already connected to a Warmy account. Use a different mailbox. If you think this is a mistake, contact our support team. ![](https://support.warmy.io/hs-fs/hubfs/image-png-Oct-12-2026-02-52-12-9616-PM.png?width=670&height=416&name=image-png-Oct-12-2026-02-52-12-9616-PM.png) > The error message appears above the **Connect** button. | Message | What it means / what to do | | --- | --- | | This email is already used | This mailbox is already connected to Warmy. Use a different email address. | #### You don’t have an available plan Each plan covers one mailbox. If all your plans are already in use, you can’t connect another mailbox until you add a new plan. ![](https://support.warmy.io/hs-fs/hubfs/image-png-Oct-12-2026-02-52-32-1751-PM.png?width=670&height=416&name=image-png-Oct-12-2026-02-52-32-1751-PM.png) > You cannot create a mailbox with this plan — purchase an additional plan or disconnect a mailbox you no longer need. | Message | What it means / what to do | | --- | --- | | You cannot create a mailbox with this plan | You cannot create a mailbox with this plan — purchase an additional plan or disconnect a mailbox you no longer need. |  If your subscription has expired, the connection form is replaced with an upgrade notice:  | Message | What it means / what to do | | --- | --- | | Your current plan does not allow mailbox connection. To continue, please upgrade your subscription and unlock full access | Your plan doesn’t currently allow connecting mailboxes, so the connection steps are replaced by this notice. Upgrade your subscription or book a call with the team. | #### The connection failed If Warmy can’t connect to the mailbox, a **Connection failed** message appears in the bottom-right corner. The most common cause is using your regular WEB.DE password instead of an app password. Check that: - POP3/IMAP access is turned on in your WEB.DE settings. - You pasted the **app password**, not your regular password. - The email address is correct. ![](https://support.warmy.io/hs-fs/hubfs/image-png-Oct-12-2026-02-52-58-0157-PM.png?width=670&height=414&name=image-png-Oct-12-2026-02-52-58-0157-PM.png) > Connection failed — the error appears above the buttons and in the corner of the screen. | Message | What it means / what to do | | --- | --- | | Error: Connection failed | Warmy couldn’t connect with the details provided. Make sure you’re using an app password and that POP3/IMAP access is turned on in WEB.DE, then try again. | | Something went wrong. Please try again. | A temporary issue on our side. Wait a moment and try again. |  If the connection fails 3 times in a row, Warmy offers a free 10-minute call with our team. Click **Schedule a call** to book it, or **Cancel** to keep trying.  ![](https://support.warmy.io/hs-fs/hubfs/image-png-Oct-12-2026-02-53-15-3225-PM.png?width=670&height=421&name=image-png-Oct-12-2026-02-53-15-3225-PM.png) > > *Connection error pop-up — book a call with our team, or keep trying.* | Message | What it means / what to do | | --- | --- | | Let us assist you with a 10-minute one-on-one call | The connection has failed several times in a row. Click **Schedule a call** to book a free 10-minute call, or **Cancel** to keep trying | | Info: Connection processing in progress | Warmy is checking the connection to your mailbox. Wait a few seconds. | | Success: Mailbox successfully connected | Your mailbox is connected. 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