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Contact support team or view help articles.

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Report a bug or technical error

Account frozen

Unblock bounces or complaints

Billing issue

Enquire about billing issues

Sales and procurement

Speak to our sales team

Legal and compliance

View legal documents and vendor compliance

General enquiry

Get help with your account or API

Related content

Whitelist email addresses

To send emails to external recipients you must obtain double opt-in consent OR whitelist the recipient domains. Please provide your domains and support team will unblock you.

Unfreeze frozen account

If your account is blocked due to complaints or bounces please submit the form below. You must explain what emails you are sending and how you will avoid future bounces or complaints.

Trouble-shooting general 530 SMTP errors (email receiving issues)

What SMTP error codes exist and how to deal with them. Debug error 530 when MX DNS domain records are missing.

The limitations of the free plan are as follows:

MailSlurps free Email API is a great way to build and test applications but has some rate limits. Consider upgrading for more use.

The inbox is currently not receiving any emails.

How to debug and fix common issues when sending and receiving emails with MailSlurp inboxes and email accounts

The email addresses have expired.

Create auto expiring inboxes using MailSlurp disposable mailboxes. Email accounts that expire and self destruct.

Sales enquiry

How can we help you?

Report a bug

Open a issue ticket and our developers will investigate the cause and get back to you.

Refund request

Submit a refund request for your MailSlurp account

Please confirm if you want to cancel your plan or delete your account.

You can manage your account in the MailSlurp dashboard. Upgrade or downgrade your subscription and manage payments and billing.

Managing your account subscription is crucial for maintaining your services.

How to configure your billing and subscription aspects of your MailSlurp account and view billing information.

Managing billing and invoices efficiently is crucial for success.

Manage subscription payments and invoices in the MailSlurp billing portal. Upgrade or cancel your plan and view payment history.

Manage billing information, invoices, and payment records.

Update billing and subscription information for your MailSlurp organization. See payment history and download invoices.

MailSlurp domain pool accounts are perfect for managing multiple email addresses.

Using the domain pool with MailSlurp email API to randomize your sender address. MailSlurp maintains a pool of domains you can use.

MailSlurp account access

MailSlurp single sign-on and OAuth sign-in configuration. How to log into your account using a password or social login

Increase the length: Timeout health and 502 exceptions.

Prevent HTTP timeouts and socket exceptions when calling the MailSlurp API by configuring client timeouts within your SDK client.

Implementing organization team access control policies and procedures.

Guide for team setup and controlling user permissions for enterprise and team accounts. Use SSO and organization invites to manage access.

Help and support guides for MailSlurp are available here.

We are always here to support you. Please find our support guide articles or contact us directly to ask any questions.

Grant support access to your account for assistance.

How to enable MailSlurp support team access to your account to debug issues you are experiencing with the app or API.

Frequently Asked Questions for MailSlurp

Frequently asked questions about MailSlurp email and SMTP API service. What features and protocols are available.

Enquire about billing

Please fill out the form below and will process your billing enquiry

Email i18n and localization is important for global communication.

How to support non-English languages in SMTP email when using ASCII encoding for non-ASCII charsets. Special character punycode guide.

Dealing with SendGrid 550 and 530 errors - Troubleshooting tips and solutions.

How to handle SMTP and IMAP errors that can occur with SendGrid when sending to MailSlurp email addresses and inboxes.

Create and accept a MailSlurp quote

Step by step guide for purchasing MailSlurp using a quote

Change MailSlurp account email address to a new one.

Support article for how to change your email address when using the MailSlurp app and grant access using a password.

554 Email rejected. Please check your email address and try again.

How to diagnose 554 smtp errors and configure your mail client to send email correctly to custom domains with MailSlurp