PPemail offers the common methods to sync your device(s) including IMAP, POP3, SMTP, and SSL/TLS.

 

Which syncing protocols to use?

IMAP & POP3 are for incoming (getting your email) while SMTP works on the outgoing (sending emails).  SSL/TLS adds a layer of security but may not function properly on older systems.  The best protocol for you depends on how you use email.

 

Incoming

IMAP: Better when syncing across multiple devices

• The PPemail server syncs the actions with the email applications across all your devices.
• Read/delete/move a message on one device and the action syncs across all your devices.
• Create a subfolder on a desktop, it’s available on your mobile device too.

POP3: Best for keeping account information independent

• The PPemail server holds the message until a device connects then manages each device independently.
• Read/delete/move a message on one device and other devices do NOT sync the action.

See a detailed comparison between IMAP & POP3 at Wikipedia

 

Outgoing

SMTP: Protocol to send outgoing email

• Can send outgoing email through different servers, usually dependent on location.
• Use different servers for WiFi, mobile, office, & home 
• Unsecured (public) servers are convenient but are risky because they expose messages and devices.  Be careful.

 

Security

SSL/TLS: Required security feature

• PPemail servers create an encrypted connection thereby preventing messages from being read in transit.
• Highly recommended to use SSL/TLS
• Some older systems are unable to connect using it.

 

Recommendations

For most, the main decision is between POP3 and IMAP.

• IMAP if prefer to act on an email once across all devices
• POP3 if use one primary device with occasional checks from secondary devices.

Because security is important, send all emails only through authorised SMTP and enact SSL/TLS.  Update the device’s operating system if the current one prevents it.