when ever account type is changed form any value to 'Customer' need to send an email to account owner saying your account become customer and create a task and assign it to account owner.
closed as off-topic by Dave Humm, Himanshu, David Reed♦, Pranay Jaiswal, battery.cord Dec 11 '18 at 14:45
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Questions on problems in code you've written must describe the specific problem and include valid code to reproduce it. For help writing short, self-contained syntactically-valid examples, see: SSCCE.org" – Dave Humm, Himanshu, David Reed, Pranay Jaiswal, battery.cord
Create a workflow whenever any account is updated, add a criteria whenever the field value changes to 'customer', create a workflow action and send the email to Account Owner and add one more action of creating a task, and in the 'Assigned To' field, choose the value of the Account Owner.