How to check/test for an SPF record on a domain? How to check/test my CNAME record in email campaigns? How to check/test DKIM records for my domain? How do I check If I have added the Vtiger SPF record to my sending domain correctly? How do I check if I have published the correct Vtiger DKIM record in the sending domain? How can I ensure my email content is relevant to recipients? How does Vtiger CRM simplify the opt-out process? How can Vtiger CRM help with managing marketing lists? What does a spam score indicate? How do I use MailTester to check my email spam score? How can I send my email campaign to the AboutMy.email contact in Vtiger CRM? How can I add MailTester’s email address as a contact in Vtiger CRM? What tools can I use to check if my email will be flagged as spam? How does a custom domain improve email deliverability? Should I send a test email before launching my campaign? Why are my Gmail emails ending up in spam, and how do I fix this? Why are my emails being flagged as spam in Outlook, and how do I resolve this? What can I do to make sure my emails don’t bounce? How do I know if my emails are not being delivered?