Esendex
6.4#38 in transactional sms softwareFrom £54 a monthWebAPI
VisitEsendex vs Mailchimp
What both publish
| Fact | Esendex | Mailchimp |
|---|---|---|
| API | The multichannel API supports SMS, WhatsApp, RCS and email, with documentation and integration support. | Mailchimp exposes open Marketing and Transactional APIs authenticated with OAuth or API keys. |
| Founded | 2001 | 2001 |
| Headquarters | Nottingham, United Kingdom | Atlanta, USA |
| Integrations | Listed software integration guides cover Zendesk, Goldmine and Outlook SMS integrations. | Mailchimp advertises more than 300 integrations, including Shopify, WooCommerce, Canva, Zapier, Salesforce, WordPress, Stripe and QuickBooks Online. |
| Security | Esendex says it is ISO 27001 certified and supports GDPR compliance; its UK Connect platform is also certified to Cyber Essentials and NHS DSPT. | Mailchimp says its SOC 2 reports cover security, availability and processing integrity, and it maintains ISO 27001 certification and a VPAT. |
Esendex plans
- Starter£54 a month
- Growth£143 a month
- Enterprise£468 a month
Mailchimp plans
- FreeFree
- Essentials$13 a month
- Standard$20 a month
- Premium$350 a month
Pick Esendex if…
You want what its maker publishes above — check its page for the details.
Pick Mailchimp if…
Mailchimp suits people who need email campaigns alongside automation, segmentation, landing pages, or A/B testing. Its free plan may fit smaller contact lists and modest monthly sending needs.