Kinsoft Plugins /Plugins /SMTP Mailer
SM

SMTP Mailer v1.0.0

Send WordPress email through your SMTP server with a forced From address and a test button. Pro adds API senders, fallback and bounce handling.

No credit card for the trial. Pro from $3.25/mo, billed annually. 14-day money-back guarantee.

By default WordPress hands email to the web server's mail() function, and a lot of it ends up in spam or never arrives. SMTP Mailer sends every WordPress email (password resets, order emails, contact forms) through a proper mail server instead: your email host, Microsoft 365, Google Workspace, Amazon SES SMTP, Brevo or any other SMTP service.

Free

$0 forever

  • Smtp settings
  • Test email
  • From-name fix
Download free

SMTP Mailer Pro

$39 per year, single site

Everything in Free, plus:

  • **Several providers with automatic fallback.** Add more SMTP accounts and the Amazon SES or Postmark email APIs, put them in order, and if one fails the next one sends the email.
  • **Sending limits per provider.** Set an hourly and a daily maximum for each provider (handy for plans with sending quotas); when one is reached, the next provider takes over.
  • **Bounce and complaint handling.** A webhook address receives hard bounces and spam complaints from Postmark, Amazon SES (through SNS) or any other service, and adds those addresses to a suppression list. SMTP Mailer then stops emailing them, which protects your sender reputation. You can add and remove addresses by hand too.
  • API keys and tokens are stored encrypted, like the SMTP password.
Try Pro free for 14 days

Screenshots

Settings > SMTP Mailer: the SMTP server, encryption and login
Settings > SMTP Mailer: the SMTP server, encryption and login
A failed test email with the mailer's error message
A failed test email with the mailer's error message
Pro: providers in fallback order with hourly and daily limits
Pro: providers in fallback order with hourly and daily limits
Pro: bounce and complaint webhook addresses and the suppression list
Pro: bounce and complaint webhook addresses and the suppression list

Pro pricing

One licence covers updates and support for a year. Pick the number of sites you run it on.

Single site

$39/year

$3.25 per month, billed annually

Buy Single site

5 sites

$78/year

$6.50 per month, billed annually

Buy 5 sites

25 sites

$156/year

$13.00 per month, billed annually

Buy 25 sites

Checkout and licensing run on Freemius, our merchant of record. 14-day money-back guarantee. Prices in USD; any applicable tax is shown at checkout.

Requirements

WordPress 6.4 or newer (tested up to 7.1), PHP 7.4 or newer. Works with the block editor and the classic editor.

Installation

  1. Download the free version or start the Pro trial above. Freemius emails you the zip and, for Pro, your licence key.
  2. In WordPress go to Plugins → Add New → Upload Plugin, choose the zip and activate it.
  3. Pro: paste the licence key when the plugin asks for it, or later under the plugin's Account screen.

Stuck? Open a support ticket and include your WordPress and PHP versions.