Feature Requests

We don't need the Professional plan as our email volume is low, but we would like to be able to access the logs. We will be sending less than 2500 emails per month but we can upgrade to the Starter plan if this would give us the option to access the logs, even if we need to purchase it as an add-on. Our primary reason for using MailerSend is the logs. We need deep insights into why email issues occur whenever they occur. However, it's not feasible for us to upgrade to a higher plan just for the logs.

In the PHP SDK, the method signature for fetching hard bounces indicates that the $page parameter is optional and nullable: However, if you invoke this method without passing a page argument (or passing null), the SDK includes the empty key in the API request query string. This triggers a strict server-side validation error from the MailerSend API: MailerSendValidationException: The page must be at least 1 To bypass this, developers are forced to explicitly pass 1 even if they just want the default first page, but it's not helpful if you don't know how many pages there are.

I am concerned about the lack of an idempotency key in your API, which is a common technique to prevent issues if a developer makes a mistake. Without it, there's a risk of spamming clients, leading to dissatisfaction and potential budget issues. Implementing an idempotency key would help mitigate these risks and improve reliability.

We are asking for this feature so that we can fetch tags for multiple message IDs in one request instead of calling GET /v1/messages/{id} for every message. This would help a lot with reliable high-volume sending and webhook processing.

All of our emails seem to be routed through Europe (Netherlands and Lithuania) This is causing a large chunk of them to get blocked as I deal with municipal government agencies in the US exclusively. mail021.mlsend.com [185.225.161.21] MailerSend [212.11.79.129 - Netherlands]

Allow smtp users to be restricted by domain so that one smtp account cannot be used to send mail from domains on the account.

I noticed that the MAILERSEND.EMAIL .MESSAGE.SINGLE(MESSAGE_ID) endpoint doesn't include recipient information in its response. It would be beneficial if this endpoint could return complete sender information for individual emails, similar to the ACTIVITY METHOD. This enhancement would simplify the process of tracing emails and improve overall efficiency.

We would like to be able to use your API to filter activity by recipient email address. This can be done using your dashboard but the API seems to be lacking this feature. Webhooks alternative was provided but for regulatory reasons, we need to keep a record of communications to our clients so MailerSend is ideal for this and keeping this information off our internal systems would be perfect. However, we would need the API integration so that lookups can be done between our internal platform and yours.

When fetching domains, the status of the SPF and DKIM DNS records is included in the response but not the return path. I have to fetch the /domains/{domain_id}/verify endpoint for each domain to get the value.

Error logging is limited to the Professional plan. It would be good to show at least the errors in the backend while keeping the overall SMTP and API usage to the professional plan. It can be very hard to debug errors otherwise