Email wasn’t sent

Hi @thesmeghead,

Please install Query Monitor plugin and try the exact same scenario again and see where the error come from. After that, we might help you if it is SendGrid related.

Thank you,
SendGrid

Thanks for the offer to help! I installed Query Monitor, and tried sending the test email. Here is the Query Monitor output that was highlighted in red (let me know if there are other parts of the report that you need):

3	POST
https://api.sendgrid.com/api/mail.send.json	400 Bad Request	WP_Http->post()
 wp-includes/class-http.php:576
wp_remote_post()
 wp-includes/http.php:187
Sendgrid_API->send()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/sendgrid/class-sendgrid-api.php:50
wp_mail()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/sendgrid/sendgrid-wp-mail.php:407
Sendgrid_Settings::send_test_email()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/class-sendgrid-settings.php:768
Sendgrid_Settings::do_post()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/class-sendgrid-settings.php:384
Sendgrid_Settings::show_settings_page()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/class-sendgrid-settings.php:142
do_action('settings_page_sendgrid-settings')
 wp-includes/plugin.php:524	Plugin: sendgrid-email-delivery-simplified	5	0.1331

Hi @thesmeghead,

This is weird. Can you please attach a screenshot of your settings? We want to reproduce your issue.

Thanks,
SendGrid

I’m having the same issue.

1	POST
https://api.sendgrid.com/api/mail.send.json	400 Bad Request	WP_Http->post()
 wp-includes/class-http.php:576
wp_remote_post()
 wp-includes/http.php:187
Sendgrid_API->send()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/sendgrid/class-sendgrid-api.php:50
wp_mail()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/sendgrid/sendgrid-wp-mail.php:407
Sendgrid_Settings::send_test_email()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/class-sendgrid-settings.php:768
Sendgrid_Settings::do_post()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/class-sendgrid-settings.php:384
Sendgrid_Settings::show_settings_page()
 wp-content/plugins/sendgrid-email-delivery-simplified/lib/class-sendgrid-settings.php:142
do_action('settings_page_sendgrid-settings')
 wp-includes/plugin.php:524	Plugin: sendgrid-email-delivery-simplified	5	0.0792

Settings – 1
Settings – 2

My settings are pretty much the same as crumptoninc

• This reply was modified 7 years, 11 months ago by MikeKremer.

Hi guys,

What version of WordPress are you using and what version of SendGrid plugin?

Thanks,
SendGrid

WordPress 4.6.1

SendGrid plugin Version 1.10.2

Hi,

Still can’t reproduce this issue. It maybe something caused by your hosting and the way it communicates with external APIs.

Thank you,
SendGrid

My versions are the same. WordPress 4.6.1 and SendGrid 1.10.2.

FYI — I was having this same problem, WP 4.7 and SendGrid 1.10.2. After hours of playing with recreating new API keys, I finally tried Authentication method: Username&password in the SendGrid plugin settings and my test message was finally delivered. Upon a successful message, I switched back to Authentication method: API and it still did not work. I hope this helps determine what the issue is!

Kari

Hi @karisharp,

Which permissions does you API Key have?

Thank you,
SendGrid

@team-rs It looks like you’re using the V2 API endpoint to send messages when using the API:

From class-sendgrid-api.php:
const URL = "https://api.sendgrid.com/api/mail.send.json";

But according to these docs on your site API keys are only supported on the V3 API and later.

I tried just switching the URL to a V3 URL, and that didn’t work, but my error changed from an HTTP 400 to an HTTP 401.

Update: It seems that getting a new API key started things working. Both keys have the same permissions, I’m not sure why one works and the other doesn’t.

• This reply was modified 7 years, 10 months ago by johnnyb. Reason: Found a solution

Update again: Be very, very, sure that you have no extra white space around your API key when you paste it into the API Key box on the settings page. I had a space at the beginning of the API key and that was causing the trouble. When I found & removed the space the old API key that didn’t work before started working.

@team-rs: Could you trim() the API key at some point? Since it’s masked as a password white-space is a very hard error to catch.

Hi @johnnyb,

Thanks for you feedback. In the next versions we will apply function trim() to the API Key.

Thanks,
SendGrid

I had the same experience as Kari: I got it to work using username/password but when I switched back to API it didn’t work. It turned out John Beales was right– I had a blank space at the beginning. Unfortunately the way SendGrid displays the API key the one time they show it makes it very hard to select just the characters. I found the space by pasting first into TextEdit before copying the key into WP. Adding trim() should help with this issue.