- Squarespace Commerce
- Squarespace Integration
- Stripe
- Stripo — Drag & Drop Email Template Builder
- SugarChimp: SugarCRM & Mailchimp Integration
- SuiteCRM
- Supermetrics
- SurveyMonkey
- SurveySparrow
- Survicate - Surveys for Mailchimp
- Sweet Analytics
- Swydo
- Swym Back-in-Stock Alerts
- SyncApps by Cazoomi
- Syncgrip
- Tabular - Email Template Builder
- TapClicks
- Teamgate
- Textiful
- The marketing platform built for e-commerce
- ThunderTix
- Tiendanube
- Tillpoint
- TOPOL.io
- Tray.io
- Typeform
- UCare - Church Management
- Unbabel for Mailchimp
- Unbounce
- Unito
- Unlayer
- Unsplash
- UpContent
- Viewed | Personalized video in email
- Vimeo
- ViralKit
- ViralSweep
- vtiger CRM 6.3 (or better) extension Modul
- Vtiger CRM Integration
- WaiverFile
- weForms
- Whatagraph
- WisePops - Intelligent Pop-ups
- Wishpond Lead Generation Pages and Promotions
- Wistia
- WordPress
- Workato - App Integrations for Mailchimp
- X-Cart for Mailchimp
- X-Cart for Mandrill
- Xero
- Yelp for Business
- YIKES Easy Forms for Mailchimp
- Yotpo Ratings & Reviews by Mailchimp
- Zenamu
- Zendesk Activity
- Zendesk Campaign
- Zendesk Sell
- ZeroBounce
- Zoho Analytics
- Zoho Cliq
- Zoho Commerce
- Zoho CRM
- Zoho Desk
- Zoho Recruit
- zzBots
