Hey gang. Currently using sparkpost as my SMTP provider, however even with all of the DNS records in place for my domain (SPF/DKIM, etc), the vast majority of the emails sent by my site end up in the SPAM bin for my users.
I switched over to mailgun as a test , and the email deliverability was practically %100, however it is a paid plan (I used the free trial for testing), however without a credit card, you can only whitelist five email addresses.
With all that being said, can anyone recommend another decent free service such as sparkpost? I understand that mailgun is only $10/month, but still looking for free options.
Any recommendations? Deliverability is very important.