Customize App
Give your Slack bot a name, profile picture, and description — per domain. Instead of a generic webhook, your team sees a branded bot identity every time a customer email arrives.
What is this page?
The Customize App page lets you control how the Slack bot looks when it posts email notifications into your channels. Settings are per domain — so each domain you manage can have its own bot name, avatar, and description.
The three settings
Each setting controls a different part of how the bot appears in Slack.
Bot Name
The display name that appears in Slack when the bot posts a message. Instead of a generic label, it shows whatever you type here — e.g. "Acme Support" or "Billing Bot". This name appears at the top of every message the bot posts.
Bot Avatar
The profile picture of the bot in Slack. Upload a JPG, PNG, GIF, or WebP image (max 2 MB). When the bot posts a message, that image appears as its profile photo. If you don't upload anything, Slack uses a default icon.
Bot Description
A short line of text that appears below the email header in every Slack message the bot posts — shown as small italic grey text. Gives your team context about which domain or purpose this bot serves.
About bot description
The description now shows directly inside every Slack message as a small italic grey context line below the email header — it is visible to your whole team, not internal only.
How to customize
Takes under a minute per domain.
From the dashboard, navigate to Dashboard → Customize App from the sidebar. You'll see a tab bar at the top listing all your verified domains.
Pick the domain you want to brand from the tab bar. Each domain has its own independent bot settings — so support.acme.com and billing.acme.com can each have a different bot name, avatar, and description.
Enter a Bot Name, upload a Bot Avatar image (JPG, PNG, GIF, or WebP — max 2 MB), and optionally type a Bot Description. All three fields are optional — leave any blank to use Slack's defaults.
Click Save Changes. From that moment on, every email notification posted to Slack for that domain will display your custom bot name, avatar, and description instead of the generic webhook defaults.
If fields are left blank
All three settings are optional — here's what happens when each is omitted.
No bot name
Slack uses the default name set in your Slack app settings.
No avatar
Slack uses the default icon for the integration.
No description
No context line appears in the message, which is perfectly fine.