Surbma – SMTP — WordPress Plugins

You can define all parameters in the wp-config. php issue and it will be valid for all sites in Multisite.
You can install it on WordPress install also and it will work absolutely.
This plugin is working with SMTP servers and services name Mailgun SendGrid Mandrill Amazon SES and others..
SURBMA SMTP USER User for SMTP account..
SURBMA SMTP PASSWORD Password for SMTP account...
SURBMA SMTP PORT Port number for SMTP server..
SURBMA SMTP SECURE Choose SSL or TLS if for SMTP server..
SURBMA SMTP FROM From email address for all incoming emails..
SURBMA SMTP FROMNAME From like for all incoming emails...
Example configuration. `. define 'SURBMA SMTP HOST 'smtp. mailgun. org define 'SURBMA SMTP USER 'postmaster@surbma. com define 'SURBMA SMTP PASSWORD 'bb2b************************4133′ `.
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