Updating Your Email Settings to TLS 1.2 for IMAP, POP3, and SMTP

Overview

To enable encryption (SSL/TLS) in your email program, do the following:

  • Open the email settings in your preferred email program.

  • Enable SSL/TLS encryption for the mailbox.

  • Use the following ports for the incoming and outgoing mail server:

    POP3 (SSL/TLS): 995
    IMAP (SSL/TLS): 993
    SMTP (SSL/TLS): 465

You can find more details about how to make these changes for some of the most common email programs below.

Please Note

If you are using a different email program than those listed below, we recommend that you check to see if that program supports TLS 1.2 or newer. If the email program you are using does not support TLS 1.2 and later, you will not be able to use it to connect to the IONOS email servers to send and receive messages after TLS 1.0/1.1 and unencrypted IMAP/POP3/SMTP connections are disabled.

Enabling Encryption in Microsoft Outlook 2016/2019 (Windows)

You can find more details instructions on how to enable encryption in Microsoft Outlook 2016 and Microsoft Outlook 2019 in the following article:

Enabling SSL Encryption in Outlook 2016/2019

Enabling Encryption in Outlook for Microsoft 365

You can find out how to enable encryption in Outlook for Microsoft 365 in the following article:

Enabling SSL Encryption in Microsoft Outlook (Microsoft 365)

Enabling Encryption in Mozilla Thunderbird

You can find more details instructions on how to enable encryption in Mozilla Thunderbird here:

Enabling Encryption in Mozilla Thunderbird

Enabling Encryption in Apple Mail

You can find more details instructions on how to enable encryption in Apple Mail in the Enabling SSL Encryption section of the following article:

Setting Up an IONOS Email Account in Apple Mail

Enabling Encryption on an iPhone/iPad

You can find more details instructions on how to enable encryption on an iPhone/iPad here:

Enabling SSL Encryption on an iPhone/iPad

Enabling Encryption in Android

You can find more details instructions on how to enable encryption in the Gmail app or Samsung's email app in the following article:

Enabling Encryption in Android