Can I use ZeptoMail with another another plugin such as WP Mail SMTP?

Can I use ZeptoMail with another another plugin such as WP Mail SMTP?

Yes, but only one plugin should handle your outgoing mail at a time. Running two mail plugins at once can cause conflicts where one plugin may silently block the other, and emails might not send at all.

If you want ZeptoMail to send all your emails: Disable the other mail plugin, or ensure they are not configured to override WordPress email sending.

If the other plugin needs to handle specific emails (such as contact form submissions): Set that plugin to use its own built-in mailer, and make sure it is not set to override WordPress mail globally.

If the issue persists, contact us at support@zeptomail.com.