method 1
Create an email address for a channel or DM

By default, anyone can create an email address for a channel or DM. Once an email address has been created for a conversation, anyone with the email address can use it to send emails to Slack.

Note: If you  work with people from other organisations in channels, each organisation can create a unique email address for a channel. Any emails sent to that channel will be visible to all members.

Create an email address

1. From your desktop, open the channel or DM that you’d like to send emails to.
2. Click on the channel or member name(s) in the conversation header. 
3. Click on the Integrations tab. 
4. Select Send emails to this [channel] or [conversation]. 
5. Click on Get email address. 
6. If you’d like to set up an automatic forwarding rule from your email provider or add the email address to your address book, click on Copy next to the email address.
7. If you created an email address for a channel, Slackbot will post a message that’s only visible to you with a prompt to let members know that an email address has been created. Click on Share email address to post a message to the channel with any details that you want to share. Otherwise, click on Dismiss.
   
   

method 2

Customise email appearance

If you like, you can add an image and customised name for emails posted to Slack so that they’re easier for people to recognise.

1. From your desktop, open a channel or DM with an email address.
2. Click on the channel or member name(s) in the conversation header. 
3. Click on the Integrations tab. 
4. Select Send emails to this [channel] or [conversation]. 
5. Click on  Customise email appearance.
6. Below Email icon, open the drop-down menu to upload an image or choose an emoji to display alongside emails posted to Slack.
7. Below Email name, enter a label for your emails.
8. Click on Save changes.