
Mailchimp
8.3#1 in email marketing softwareFrom $13 a monthFree planAndroidiOSWebAPI
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| Fact | Mailchimp | Mailtrain |
|---|---|---|
| API | Mailchimp exposes open Marketing and Transactional APIs authenticated with OAuth or API keys. | The Docker configuration has an optional setting for an API access token. |
| Free plan | Yes | Yes |
| Security | Mailchimp says its SOC 2 reports cover security, availability and processing integrity, and it maintains ISO 27001 certification and a VPAT. | The project says its separate trusted, sandbox, and public endpoints help avoid XSS attacks in multi-user settings. |
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.
Mailtrain suits organizations that want to host their own newsletter service and need subscriber segmentation, campaign automation, or multi-user permissions. It is a fit for teams able to meet its runtime, database, and hardware requirements.