I'm part of a group that organizes an "Adopt A Family" program each holiday season, and looking for recommendations on what platform I should be using that meets my very basic needs.

Relevant info:

This list is only used for this program so I'm only sending emails out for 2 months out the year (late Oct - mid Dec). Given that it's a 100% volunteer driven effort, I would prefer for it to be as low cost as possible

Our donor list is currently a little over 500 people, but I'd expect that to grow over time as our program has built momentum over the years (we had ~180 new donors in 2025)

All emails are currently sent from my personal gmail and since they're to donors who have participated in the program before, there's already some kind of prior interaction with me (I see a bunch of acronyms like SPF/DKIM...not sure if that's relevant in my case)

I used to use a combo of free Mailchimp + Mailmeteor + manual Gmail follow-ups to reach this group.…