| Price from | $9/mo | $13/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 7 | 5 |
| Spec score · Email Marketing Software | 7.7 (#124) | 9.0 (#5) |
| Spec score · Email marketing tools | 7.3 (#154) | 9.4 (#2) |
| Analytics | The platform tracks opens, clicks, hard and soft bounces, unsubscribes, SMTP logs, and sending progress in real time. | Reporting includes campaign reports, send-time optimization, smart recommendations and engagement analytics. |
| API | Mail250's knowledge base lists a Transactional Email API and guides for CodeIgniter, Django, Ruby on Rails, and Laravel. | Mailchimp exposes open Marketing and Transactional APIs authenticated with OAuth or API keys. |
| Founded | 2020 | 2001 |
| Headquarters | Thane, Maharashtra, India | Atlanta, USA |
| Integrations | Mail250 lists Outlook, Microsoft Exchange Servers, Mautic, Postfix, Joomla, XenForo, and SendBlaster integrations, and says its SMTP works with WordPress, Zapier, and CRM tools. | Mailchimp advertises more than 300 integrations, including Shopify, WooCommerce, Canva, Zapier, Salesforce, WordPress, Stripe and QuickBooks Online. |
| Native integrations | 7 | 300 |
| Support | The site lists one-to-one calls, webinars, email, live chat, and help guides; pricing states email tickets typically receive a response within 24 hours on business days. | Official feature pages state 24/7 service and support, with onboarding specialists and customer-success services for paid customers. |
