ProtonMail

How To: Tell When Someone Opens the Emails You Send Them (Using Hidden Trackers or Read Receipt Requests)

ProtonMail 101: How to Make Images Show Up in Your Emails Automatically

ProtonMail 101: How to Customize Swipe Actions for Messages

ProtonMail 101: How to Send Self-Destructing Emails

ProtonMail 101: How to Send End-to-End Encrypted Emails to Non-ProtonMail Recipients

ProtonMail 101: How to Change Your Display Name That Shows Up in Emails

Your display name in ProtonMail is what email recipients will see when they first receive your message in ProtonMail, Gmail, or another email provider. You can choose this name when you first set up your ProtonMail account, but it can also be set up after the fact if you skipped that step.