Is it possible for a client to purchase SAP (Sender Authentication Package) but use a shared IP? SAP comes with a dedicated IP and I can't find anywhere saying if it's required to have or not. The client's email send volume is very low, so a shared IP is the best for them right now, but they want the branding, RMM, etc. - everything else that comes with SAP.
Yes you can have this configuration:
If you send less than 100,000 messages per month, you can still benefit from authentication of SAP and request to remain on our shared IPs or share another IP within your account structure. This option must be clearly stated in any SAP submission or else a dedicated IP is assigned to the account.