You want to change your email from your current hosting provider to Google Apps. What should you do to ensure the change does not take more than an hour?

You want to change your email from your current hosting provider to Google Apps. What should you do to ensure the change does not take more than an hour?

• Change the MX record to the ones provided by Google
• Change your NS records to Google IP address
• Create a new A record
• Check and lower the TTL 

 

EXPLANATION

It's always a very good idea to check and lower the Time-To-Live (TTL) for a domain to ensure that any changes made are propagated in a short time frame and your customers and boss remain happy. NOTE: TTL is normally specified in seconds, you need to divide by 60 to get minutes.
https://mediatemple.net/community/products/dv/204644120/understanding-ttl-(time-to-live)
In the end you will need to change the MX record, but changing the MX record does not change how quickly the change will happen.