How to add Customerly SPF with an existing SPF record?

If you want to add the Customerly SPF record on top of the SPF you are already using, follow the instruction below:

Let's assume you have google SPF in your TXT record: 

v=spf ~all

What you need to do is adding the Customerly SPF in this way:

v=spf1 ~all

Just append the after your current SPF and before the ~all

 Hope this helps