In my case, I can't send any email the default email system also no working. For checking, I sent the order confirmation mail it is not sending. it shows the error alert "Unable to send mail: Unknown error"

I had enabled all features but it is not working.


Check Stores->Configuration-> Sales->Sales Emails->Order . Enabled is "Yes".

Email Communication:

Check Stores->Configuration-> Advanced->System->Mail Sending Settings. Email Communication is enabled.
  • Please check the your sever mail service is enable ?? Mar 6 '20 at 12:59
  • You need to setup email server configuration in order for E-mails to work. Mar 6 '20 at 13:08
  • check error log in magento. to get more info about error
    – MagenX
    Mar 6 '20 at 14:21

I suggest you to install click here Module for email setup.

This is the best extension which allows you to easily send emails using SMTP.

I hope this extension helps you to send Email.

  • I added the Abzer SMTP for this and working
    – Sabareesh
    Mar 30 '20 at 9:14
  • Ok but it's also most usage and working
    – Msquare
    Mar 30 '20 at 9:15
  • Ok i will try this
    – Sabareesh
    Mar 30 '20 at 9:21

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