Summarize this buying guide. Preserve named providers, plan terms, source dates and billing units. Separate documented scope from the author's judgment. Do not invent prices, product features or outcomes.

SlickText pricing starts at $29 a month for 500 message credits and runs through eight standard plans to $939 a month for 50,000 credits, with larger volumes quoted by sales ( SlickText pricing page ). Annual billing costs ten times the monthly price, so the 500 credit plan is $290 a year ( SlickText mass texting page ). Every plan includes all features, unlimited contacts and free incoming texts, so what you are really buying is outbound credits. One credit is one 160 character SMS segment sent to one subscriber, an MMS uses three credits per segment, unused credits roll over for one term, and carrier fees plus some sending number types are billed on top. Size the plan from the segments you will send each month, not from your subscriber count. Pricing cart reminders also means deciding who answers the replies. Zobi runs personal cart recovery and follow-up conversations , with the cart and purchase history in the same thread and merchant approval before sending.

SlickText pricing page and pricing FAQ https://www.slicktext.com/pricing
SlickText mass texting service page, including plan table, carrier fees and number types https://www.slicktext.com/mass-text-messaging-service
Klaviyo help center: Understand Klaviyo's mobile messaging system (SMS segment rules) https://help.klaviyo.com/hc/en-us/articles/13502982552347
Zobi for DTC brands https://zobi.com/dtc/