Gmail couldn't verify that [domain] actually sent this message

Hi,

I’ve set up Easy WP SMTP on a blog and it seems to work fine when it comes to delivering the emails. I get no error messages and receive the messages on multiple accounts.

However, they end up in the spam folder or have an (?)-Symbol attached to them which displays the message “Gmail couldn’t verify that [domain] actually sent this message (and not a spammer)” on hover.

I tried to use Google and this board to find a solution but wasn’t lucky. It would be highly appreciated if you could help me out here. The reason why I wanted to use this plugin is to not have to worry about these messages after all. ??

Keep up the good work!

https://www.ads-software.com/plugins/easy-wp-smtp/