There are three options for emails to be received in the Apple Mail app on your iPhone.
- Push - These emails and notifications are pushed in real time as they arrive in your account at the email providers mail server.
- Fetch - This is when Push is not available from your email provider. The emails are then Fetched by your iPhone at a time interval that you set. You have set it at every 15 minutes. Your iPhone will check for emails every 15 minutes.
- Automatic - This is when the iPhone decides to Fetch your emails when it is connected to a Wi-Fi Network and plugged in to electrical power.
Of course PUSH option is the best because emails will arrive in real time. FETCH is used when the PUSH option is NOT available and that depends on your email provider. For example, GMAIL, AOL, YAHOO etc do not provide the PUSH option for the Apple Mail app. At this point, you are then compelled to use FETCH. These providers provide the PUSH option if the user uses the provider's own app. The AUTOMATIC function mostly works when the iPhone is connected to Wi-Fi and plugged in to power.
Axel F.