3 day notice after partial rent payment

[Andrew S.]

Happy Monday BP, I have an inherited tenant that has paid $340 out of the $500 monthly rent. I use Cozy for rent collection, which allows partial payment. Our lease have a $50 administration charge after the 5th so there is now $210 remaining due. I've owned the property for 3 months, but the tenant has been in the apartment for 6+ years. I texted the tenant on the 6th (tried to be polite) to ask when the remainder will be coming. I received no response however. Should I today (the 7th) then serve the 3 day notice? Is email a fair way to serve the 3 day notice if it's been an acceptable communication method historically? I can text or call her afterwards confirming she received the notice? Thanks and happy investing, Andrew