1
WP Mail SMTP Included
Mailer keys and SMTP passwords can be defined as wp-config constants.
96feature score
WordPress SMTP & Email Delivery Plugins with Secure credential storage
Store keys in wp-config constants or encrypted in the database. 6 of the 8 plugins we track include it.
2
Easy WP SMTP Included
SMTP password encrypted in the database; credentials can also be set as constants.
97feature score
3
FluentSMTP Included
Keys encrypted with WordPress salts, or stored as wp-config constants.
89feature score
4
Post SMTP Included
Authentication credentials, including fallback SMTP, can be set as wp-config constants.
90feature score
5
SureMail Partial
Connection credentials are encrypted in the database; no wp-config.php constants.
81feature score
6
Site Mailer Partial
No provider keys stored; the site links to an Elementor account through a connect flow.
36feature score