Fixes #571

The issue was that you were using your gamil account's username and password here. Instead you should create an elastic email account, click on "connect to smtp api" in the home page and then create a SMTP. You can then use the username and password from there to replace the "username" and "password" section here.
Note : Don't forget to verify you email address here and add the "From" part.

Test plan (OPTIONAL)

Clone the repo and fill in the "username" "password" and "from" details here.

Checklist

• I have mentioned related issue number in PR description.
• [] I have added screenshots and related demo links of my changes..
• The title of my pull request is a short description of the requested changes.
• My code follows the code style of this project.
• [] My change requires a change to the documentation.
• [] I have updated the documentation accordingly.
• Open Source Program names(Hacktoberfest)