In this article, you can learn how to: 

• Send an email to a channel

• Reply to an email in a channel

• View the original email

• Troubleshoot email failures

Go to the channel name, and click More options . . . > Get email address.

Reply to an email in a channel

When you reply to an email message that has been sent to a channel, it's treated like a reply to any other post in a channel. Replying to the post in Teams doesn't send an email reply to the original sender. Any comments or conversations you have about the email in a channel aren't visible outside of Teams.

Sometimes, emails that get sent to a channel are too large to view in the conversation. To see an email in its original format, click View original email under the email in the conversation.

There are a few reasons why sending an email to a channel can fail:

• The feature is not enabled by your IT admin.

• The channel settings restrict who can send email.

• The email contains more than 50 inline images.

• The email has more than 20 file attachments.

• The email has an attachment that's more than 10 MB.

• The SharePoint folder associated with the channel has been deleted or renamed.

https://support.microsoft.com/en-us/office/send-an-email-to-a-channel-in-teams-d91db004-d9d7-4a47-82e6-fb1b16dfd51e#ID0EAABAAA=Desktop