Like many others, I had to replace postman as it stopped working, just found out it has been updated under a new name: https://wordpress.org/plugins/post-smtp/ (I followed the review request link in the new plugin and ended up here and thought I should share these pieces of information!)

O único que resolveu o meu problema em relação aos e-mails do Woocommerce estarem indo para o Spam dos meus clientes. Após instalar e configurar o plugin, os e-mails imediatamente começaram a ir para a caixa de entrada do cliente! Simples, fácil e muito funcional! PERFEITO!!

best of the best wordpress smtp plugin.. loved it.

Excellent plugin, recommended!

After years of using several different SMTP plugins, we settled on this one for all the sites we work with. There are three reasons. 1. It supports more services than anything from SMTP, to SendGrid API to AWS SES. 2. It includes outgoing email logging which is _priceless_ in debugging issues 3. It is rock solid

WordPress Plugin Postman SMTP Mailer/Email Log is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin Postman SMTP Mailer/Email Log version 1.7.2 is vulnerable; prior versions may also be affected. Edit the source code to ensure that input is properly sanitised or disable the plugin until a fix is available.