swiftmailer - Unable to send emails in Laravel using Swift Mailer - proc_open() function disabled by the provider

Question

My web host disabled proc_open function in php and I can't send emails anymore.

I get this error log:

> proc_open() has been disabled for security reasons

I use laravel default Swiftmailer. What can I do?

Answer 1

proc_open should only be required when Swiftmailer is using an external executable, like sendmail. You should still be able to use a different transport like SMTP, Mailgun, or one of the other drivers described in the docs.

As a test, try using the SMTP driver, and just entering your own SMTP mail details - whatever you use to send mail from your mail client. Try the following in your .env:

MAIL_DRIVER=smtp
MAIL_HOST=your.smtp.host // (copy from your mail client)
MAIL_PORT=your.smtp.port // (copy from your mail client)
MAIL_USERNAME=your.smtp.username // (copy from your mail client)
MAIL_PASSWORD=your.smtp.password // (copy from your mail client)

This is probably not suitable for a permanent solution but will let you test that you can send mail without proc_open. I use the free tier of Mailgun and can recommend it.