--- title: "FAQ: Migration to Selectel Email Service" sidebar_label: "FAQ: Migration to Selectel Email Service" sidebar_position: 10 description: "Frequently asked questions about migrating to Selectel Email Service" --- import Formbricks from '@theme/MDXComponents/Formbricks'; # FAQ: Migration to Selectel Email Service ## How can I test Selectel Email Service? For testing, you just need to [enable Email Service](/email-service/connect-email-service.mdx) — you can send up to 1,000 emails per month for free. Learn more about billing in the [Payment Model and Pricing for Selectel Email Service](/email-service/about/payment.mdx) guide. ## What does the 450 ratelimit exceeded error mean? The `450 ratelimit exceeded` error means that the sending rate limit for the resource has been exceeded — 20 emails per five minutes across all domains of the resource. Wait a few minutes and try sending again. Learn more about errors in the [SMTP Dialogue Errors](/email-service/smtp-errors.mdx) guide. ## How to increase the email sending limit? To increase the email sending limit, [submit a ticket](https://my.selectel.ru/tickets/create/). In the ticket, specify: * purpose of email campaigns; * desired number of emails per five minutes. ## Why are emails not being delivered or rejected by Yandex Mail? Yandex Mail is experiencing issues: emails may not be delivered or may be rejected as spam with the `554 Message rejected under suspicion of SPAM` error, even when DKIM, SPF, and DMARC are configured correctly. Please wait until Yandex staff restore the service operation. ## Can I configure Return-Path on my domain? Specifying your domain in the `Return-Path` header is only possible when enabling the paid Dedicated Sender service. To learn more about the service and activate it, [submit a ticket](https://my.selectel.ru/tickets/create/). ## How to remove bulk and List-Unsubscribe headers from transactional emails? The service headers `Precedence: bulk`, `X-MSG-TYPE: bulk`, and `List-Unsubscribe` indicate that the email was sent via a bulk mailing system and contain the standard RFC unsubscribe mechanism. The `List-Unsubscribe` header cannot be removed on the service side. The `Precedence: bulk` and `X-MSG-TYPE: bulk` headers can only be removed when enabling the paid Dedicated Sender service. To learn more about the service and activate it, [submit a ticket](https://my.selectel.ru/tickets/create/). Without enabling Dedicated Sender, you can replace the value of the `Precedence` header by passing your own header `Precedence: transaction`. If your incoming email processing logic treats `bulk` headers as unwanted, adjust the processing rules on your side.