If you need to send the same email to multiple people, consider using Google Labs' Canned Response tool. This feature allows you to save specific emails in response and send them repeatedly, without the need to manually copy and paste them.
Step
Method 1 of 3: Enabling the Recorded Responses Feature

Step 1. Click the cog icon in the top right corner of the Gmail window

Step 2. Click Settings.

Step 3. Click the Labs tab

Step 4. Select Search for a lab, then enter Canned Responses in the search bar

Step 5. Click the Enable button.

Step 6. Click Save Changes.
Method 2 of 3: Creating Recorded Responses

Step 1. Click the Compose button in the upper-left corner of the Gmail window

Step 2. Write the email you want to use as a response
You can write emails manually, or copy and paste the contents of other conversations.
Consider marking any parts of the email that may need to be changed, including the name and date

Step 3. Click the arrow next to the trash can icon, at the bottom of the e-mail compose box

Step 4. From the menu that appears, click Canned response, then select New canned response

Step 5. Name the response an easy-to-remember name, such as "Invitation" or "Thank You."
Method 3 of 3: Using Recorded Responses

Step 1. Click the Compose button in the upper-left corner of the Gmail window

Step 2. Click Canned responses.

Step 3. Click the response name you want to use under the Insert field

Step 4. Change the information in the email as needed
