Protonmail detailed instructions
In the following step-by-step process, you will be able to set up your Protonmail.com email on any Android version on your phone. This Protonmail setup process may vary by Android version, but it generally works on all Android devices.
Step 1Open Gmail App
Open an email or Gmail app from your Android phone app list.
Step 2Add Account
If you already have other email accounts in this app, go to the menu from the top 3 lines and tap settings. Click Add Account to add your Protonmail mail.
Step 3Enter Protonmail Email Address
Select the other last option on the Set up email page, then enter your Protonmail.com full email address and click the Manual Setup button located at the bottom.
Step 4Select Protocol
Select the Personal (IMAP) account from the list and enter your Protonmail email account password.
Step 5Add Incoming Server Settings Detail
Email Username: Your Protonmail email address is your username
Email Password: Your account password
Incoming IMAP server: 127.0.0.1
Incoming Port: 1143
Security type: No
Click "Next" button.
Step 6Add Outgoing Server Settings Detail
Email Username: Your Protonmail email address is your username
Email Password: Your account password
Outgoing SMTP server: 127.0.0.1
Outgoing Port: 1025
Security type: No
Click "Next" button.
Step 7Account Options
Choose an Protonmail email check frequency (preferably every 15 minutes) or Leave it as is and press the next button.
Step 8Account Name
Give your Protonmail account name and your name, but this is an optional setting. Press Done.
Step 9Done
Congratulations, Now you can send and receive Protonmail.com email on your Android device.