When it comes to sending emails arriving in a person's inbox is key. There are several things you can do to make sure that happens. Brilliance CRM takes all of these into account so that you stand the highest likely to always hit the inbox. Every time you make changes to your mail server you should check and validate the following. With Brilliance CRM we check this information continuously for your business. We check the following:

DKIM Signed: Make certain your email is properly signed.
Your message is safe and well formatted: Checks whether your message is well formatted or not.
Images Have ALT Attributes: ALT attributes provide a textual alternative to your images. It is a useful fallback for people who are blind or visually impaired and for cases where your images cannot be displayed.
Content Is Safe: Checks whether your message contains dangerous html elements such as javascript, iframes, embed content or applet.
We didn't find short URL's: Checks whether your message uses URL shortener systems.
Your message contains a List-Unsubscribe header: The List-Unsubscribe header is required if you send mass emails, it enables the user to easily unsubscribe from your mailing list.
You're not blocklisted: Checking all the email spam list directories.
No broken links: Checks if your newsletter contains broken links.
HTML to Text Ratio: Make certain you have enough text compared to all the backend developer code.

Checking all of these on each email send is key to achieving success.