using api login

HI,

I just downloaded and set up your plugin this morning, testing it for my client. I opened an account on the sendgrid.com site, believe I have it configured correctly. Now I’ve had no trouble signing in over the login method (username/password), but when I try using the api method with the api key, I get the message ’email not sent’ and no record in the activity log. This happens whether I use ‘api’ or ‘smtp’ (with the Swift Mailer plugin). Any ideas why this might be happening? My client feels more comfortable using the api key for security reasons. They’ve since bought a premium version, but would like to get this set up for them.

Thanks,

Tim

https://wordpress.org/plugins/sendgrid-email-delivery-simplified/