1
WP Mail SMTP Included
Email Test tool, plus Email Detective deliverability report.
96feature score
WordPress SMTP & Email Delivery Plugins with Test email & diagnostics
Send a test email and see a readable error if it fails. 8 of the 8 plugins we track include it.
2
Easy WP SMTP Included
Email Test page for sending test messages in the free plugin.
97feature score
3
FluentSMTP Included
Send plain or HTML test emails from settings or WP-CLI.
89feature score
4
Post SMTP Included
Send Test Email tool plus an email tester with spam score checks.
90feature score
5
SureMail Included
Send Test Mail from the Connections tab; failures show the provider's response in the log.
81feature score
6
Solid Mail Included
Email Test tab sends a test through a chosen connection and records errors.
40feature score
7
Site Mailer Included
Send a test email from General Settings; failure reasons appear in the log.
36feature score
8
Gmail SMTP Included
Test Email tab sends a message and shows SMTP debug output.
23feature score