Sending an email is taking more than 1 second, rather slow

[osnipassos]

I’ve a dedicate server and use SendGrid SMTP relay to send ~40k emails but the delivery takes a day even though the configuration is 50k/hour.

Is this a bug or have I set something wrong?

https://i.imgur.com/V7cOu7s.png

https://i.imgur.com/4GPo7Pg.png

https://i.imgur.com/y812X4P.png

Thanks for help

[Stefano]

If you have a dedicated server, set it up to relay the email to the sendgrid SMTP (configuring postfix or sendmail) and let Newsletter to use the standard delivery method of WP (the wp_mail() function). In this way you move all the sending effort to the server.
Alternatively, try to use our sendgrid addon.

[osnipassos]

Ok, I’ll try in the next newsletter.

[Author]

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