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View legal documents and vendor compliance

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Support guides and common fixes

28 of 28 resources

Download invoices, transaction receipts, and payment confirmations.

Access and Manage Invoices: A Guide for MailSlurp Clients. Follow these easy steps to view and download invoices via the Stripe billing portal.

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

Billing support

Submit a billing question about invoices, subscription changes, or payments.

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.

Open a ticket and our engineers will investigate and reply.

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.

Manage billing information, invoices, and payment records.

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

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.

Speak with support

Contact MailSlurp support for account, API, or platform help.

Inbox permanency and expiration are important to consider.

Support guide for inbox expiration using MailSlurp temporary inbox feature. How to create throw-away disposable email addresses.

Frequently Asked Questions for MailSlurp

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

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.

Unfreeze frozen account

Request a review if your account was frozen for complaints or bounces.

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.

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.

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.

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

MailSlurp Domain Pool Support Guide

Understand how MailSlurp domain pools work, when to use pooled domains, and how to combine pool usage with custom domains for resilient testing workflows.

Manage Organization Users in MailSlurp

Learn how to add or remove team members, manage organization access, and enforce secure user lifecycle controls in MailSlurp.

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.

MailSlurp Account Access Troubleshooting

Troubleshoot MailSlurp login failures, including password issues, magic-link problems, and organization portal access errors.

Create and accept a MailSlurp quote

Step by step guide for purchasing MailSlurp using a quote

Request a refund review for your MailSlurp subscription.

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.

Troubleshooting SMTP 530 Errors (Gmail, Yahoo, and Custom Domains)

Diagnose SMTP 530 errors by validating MX records, authentication settings, and domain routing configuration for MailSlurp custom domains.

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.

Whitelist email addresses

Request recipient domain allowlisting for approved external email sending.