Note : I don't know that this question is most suitable for here or ux.stackexchange.com. Please move it to that site if moderators feel like this is better for that site.
Some(can be said as a lot of too) visitors of one of my client's site uses internet just to get my client service(related to government too). Many of them are created email accounts just for register my client site.
They have no idea about message of "Please check email to complete your registration" after registration and when logging "Your account is not activated yet, please check your email" message.
There are so many non-activated accounts are on database. Some are called(via hotline) to my client and said that there is a message called "Your account is not activated yet, please check your email" when login.
So my client asked that alternative way to verify emails other than sending emails with activate link. Is there any way?