Send and receive
Work with outbound email and inbound replies through the same inbox APIs.
Mailgun or SendGrid? Test the whole journey.
Send and receive email through MailSlurp, then test the delivered message, incoming replies and the signup or purchase flow behind them.
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Give every workflow an address of its own.
Create real email addresses in the dashboard or through the API. Receive replies, inspect messages and organize inboxes around your customers, applications and test environments.
Use MailSlurp domains or connect your own domain. Choose inbox lifetimes and retention settings to suit the workflow.
Explore programmable email
React to incoming messages
Use webhooks to notify your app when an email arrives, then retrieve its content and attachments.
Inspect what was delivered
Open the received message, headers and raw content when a workflow needs debugging.
Keep the received message within reach.
Look beyond the send event. Open an email in the dashboard, inspect its final content and use the API to retrieve the fields your application needs.
For invoices, orders and support messages, add AI extraction to turn email and attachment content into structured records.
Turn incoming email into data
Test the send before your customers depend on it.
Pair your email workflow with inbox placement testing, domain checks and device previews. Check where a test lands and how the message looks before releasing a new template or changing a sending service.
Check inbox placement
How to bring a workflow into MailSlurp
Create an inbox and connect your app
Start with an address in the dashboard, then use the MailSlurp API and SDK guides to create and manage inboxes from your application.
Send a representative message
Test the confirmation, receipt or reply your app depends on. Inspect the delivered email and verify any domain settings required for your sending path. Plans show the current sending allowances.
Automate the next action
Configure a webhook or wait for the expected email through the API. Check the content, extract the data you need and continue the workflow with a repeatable test.
Make the comparison about a working customer journey.
Follow the message and its reply
Start with the same signup or purchase flow in each evaluation. Check the expected email, its links and attachments, and the reply your application needs to process. MailSlurp makes these steps accessible through the dashboard and API.
Keep a failed message available for investigation
Use a separate test inbox for each run and retain the failed message for investigation. Add device previews and inbox placement when the template or sending route changes, then compare current plans against the complete workload. For a specific move, explore our Mailgun alternatives and SendGrid alternatives guides.
Questions before you switch?
What should I test beyond a Mailgun vs SendGrid sending comparison?
Test the email that arrives, the reply it receives and the customer action it starts. With MailSlurp, give the scenario an inbox, inspect the confirmation and complete its link or code step. Include webhook handling, attachments and a failed run in your evaluation. Compare current plan allowances against those actual sends, receives and repeat checks. Plan the transactional email checks.
Can I receive replies and attachments?
Yes. Create an inbox, receive email and retrieve its content, headers and attachments through the API. Use webhooks when your application needs to react to incoming messages.
How do I compare SendGrid vs Mailgun costs with MailSlurp?
Count the sends, received replies, stored messages and repeated tests your application needs. Include any device previews, placement checks and phone numbers used by the same workflow. MailSlurp brings those capabilities into one platform; use its current plan allowances to compare the complete workload, rather than only the price of an outbound send. See current MailSlurp plans.
Bring your next email workflow into MailSlurp.
Start with an inbox, a real message and the next action your app needs.
