After connecting the mailbox to Bitrix24 Webmail, you'll get access to the additional mailbox settings, to contacts, adding the signature, configuring blacklist.
Click the cogwheel button > select one of the available options.
Let's overview the settings that can be configured only after connecting your mailbox. You can configure folders for synchronization.
Check the boxes next to folders' names that you want to be synchronized and configure folder rules. Click Save.
You can disconnect the mailbox by clicking Disable.
Then click the corresponding button to add a new signature.
To add an image instead of a signature, click the corresponding button.
Next time, you'll be able to select an existing contact from the Contacts section.
If you go to the Contacts section of the Bitrix24 Webmail, you can find the contact, edit its name and email, delete an unnecessary email address, or add a new mail contact manually.