Contact Form 7: wp_mail doesn't work after update to 4.6

Question

The wp_mail function doesn't work after updating WordPress to version 4.6.

My code is:

$headers = 'From: ' . $this->from_name . ' <' . $this->from_email .'>' . "\r\n";
wp_mail( $service->getEmail(), $this->admin_daily_subject, $admin_daily_message, $headers );

It worked perfectly before the update. Also, I've noticed that sending emails doesn't work in Contact Form 7. Any ideas? Thanks in advance.

UPDATE

As I did not find the solution, I replaced wp_mail with mail function and added some headers:

$headers = 'From: ' . $this->from_name . ' <'.$this->from_email.'>' . "\r\n" .
                           'Reply-To: '.$this->from_email . "\r\n" .
                           'X-Mailer: PHP/' . phpversion() . "\r\n" .
                           "Content-Type: text/html; charset=UTF-8";
mail( $service->getEmail(), $this->admin_daily_subject, $admin_daily_message, $headers );

With this update it works. I hope there will be some updates of wp codex about using wp_mail() with 4.6 or somebody will find a solutions.

UPDATE 2

It looks like I am not the only one that is facing this issue:

There was an error trying to send your message

Answer 1

The solution has been found here - Make WordPress Core

I've made changes in wp-includes/pluggable.php on line 352 from

$phpmailer->setFrom( $from_email, $from_name ); 

to

$phpmailer->setFrom( $from_email, $from_name, false ); 

And it works! Thanks to Marius L. J. (Clorith)!

Answer 2

On you on WAMP? Regardless, it sounds like the built-in php mail() function in your php build is unavailable for whatever reason (it doesn't usually work on WAMP or on *nix builds that don't have an internal smtp server). Your best bet is probably to start using SMTP to send emails.

You could roll your own plugin for that, but I personally like to use WP Mail SMTP. You could use a gmail account for SMTP credentials or something like Mailgun depending on the volume of emails you need to send.

If you did want to write your own plugin, you would want to hook phpmailer_init and modify the global $phpmailer variable with something like this:

$phpmailer->IsSMTP();
$phpmailer->Host = "smtp.example.com";
$phpmailer->Port = <SMTP PORT>;
$phpmailer->SMTPSecure = 'ssl';  //optional, can also be 'tls'
$phpmailer->SMTPAuth = true;
$phpmailer->Username = '<your smtp username>';
$phpmailer->Password = '<your smtp password>';

Answer 3

I installed WP-Mail-SMTP Created a [email protected] with a 0b quote. Configured the WP-Mail-SMTP to use the [email protected] - SSL On - Change localhost to the server you host on - SMTP port for SSL is 465 Tested WP-Mail-SMTP worked.

I them still could not get contact form 7 to work, I then thought missing piece of that puzzle was that I had to edit the contact form 7 from address which was [email protected] to be [email protected]

Also, reading the https://contactform7.com/faq/ was helpful, turned me onto using the track delivery app in the cpanel hosting, good to check this as it will tell you if your even connecting and trying to send email. Also user had akismet enabled but was not active so turned that off. Also mentions some issues with cache clearing frequency.

Other things to look at are if you have the right PHP version set in cPanel.

A previous post mentioning to edit pluggable.php in wp includes is a bad idea, you should not be editing the core of WordPress to fix such issues as a new core update will just break it again most likely.

UPDATE

I removed captcha from one form that was not working and it worked!!

Recaptcha
[recaptcha]

Something with recaptcha is broken.

---

FIXED!

Plugin support forums about recaptcha breaking the form sending said to add:

https://wordpress.org/plugins/contact-form-7-recaptcha/

Thought I would document my entire effort to fix in case any of my failed efforts bear fruit for someone else struggling.