Both Mailgun and SendGrid offer a wide range of integrations with other platforms to make sending email as seamless as possible.
Mailgun has a more robust set of features for developers, and offers integration with a variety of programming languages and frameworks, including Ruby, Python, PHP, and Java. It also provides webhooks for receiving email event notifications, which can be used to trigger custom actions in your application. Additionally, Mailgun allows sending email using custom domains and has a lot of options for routing and receiving email.
On the other hand, SendGrid has a simpler, more user-friendly interface and a wider range of integrations with other platforms like CRM, e-commerce, and marketing automation. SendGrid has a large number of pre-built integrations with popular platforms like Salesforce, Shopify, and Zendesk. Additionally, it has a large library of APIs and SDKs available, making it easy to integrate with a wide range of languages and frameworks.