Inviting people to your team makes it easier to collaborate around emails. They also get unlimited use of Mailflow to organize their own email account.
Step 1 – Click Mailflow.
Step 2 – Click Account settings.
Step 3 – Click Invite a team member.
Invite the person to a project.
If the person uses the same email domain as you, they will be added to your team unless they are already a part of another paid team.