Learn how to open all of a message's headers in webmail and use Received, Return-Path, Authentication-Results and Reply-To to spot an email that isn't what it seems.
Read the article: 3.1 Reading a messageThe webmail in short videos
Short videos without sound, with explanations in speech bubbles.
Reading mail
Identities and signature
You'll see how to add an identity with a different address from your domain in webmail and choose that address as the sender for a new message.
Read the article: 5.3 Sending from a different addressFilters and out-of-office
You'll see how to create a filter in webmail that automatically moves mail with a certain word in the subject to a folder. The filter runs on the server, so it also works for Outlook, Thunderbird and your phone.
Read the article: 7.1 Creating a filterLearn how to set up an out-of-office message in webmail with a subject, text, start and end date, and reply interval. It runs on the server, so it works even when your computer is off.
Read the article: 7.3 Setting up an out-of-office messageSettings and security
You'll see how to enable two-step verification in webmail: scanning the QR code with an app, saving the recovery codes, verifying the code and saving.
Read the article: 10.3 Turning on two-step verification