Hi @kailashvd,
Thanks for reaching out.
If you’d like to change the SMTP settings on your site so your emails from Contact Form 7 can work more efficiently, then, yes, WP Mail SMTP can help with that.
WP Mail SMTP helps to improve email delivery from your website by connecting to SMTP mailers (such as SendLayer, Brevo, Google, and Outlook/Office365) which send authenticated emails from reputable servers. So if you connect WP Mail SMTP to SendLayer, for example, emails from your site will be sent by SendLayer instead of your web host’s server.
Once you’ve installed the plugin on your site, please choose an SMTP mailer from our complete list here. Then follow the step-by-step guide on how to set it up. This should get you sorted.
Our #1 recommended mailer is SendLayer (sendlayer.com) due to its ease of setup, affordability, and speedy delivery.
I hope this helps.
Thanks 🙂