MAIL-FROM addresses should be RFC 2821 compliant, where the local-part of the address is a maximum of 64 characters. Presently this is not the case, and MAIL-FROM addresses can be very long depending on the original local-part, due to the bounce+id being added.

Example: bounce+fe4961.7d6c90-thisisareallylonglocalpartaddressintheoriginalemail=hostname.com@mg.senderdomain.com

The local-part of this address is 85 characters long, and is not RFC compliant, which causes mail to be rejected from MTA's which enforce this 64 character limit.

Currently, we are only able to filter information on the "Analytics" page by day. It would be very beneficial to be able to filter by a date range for our data under the analytics page in a similar fashion to how the "Reporting" filter works (30, 60, 90, or custom day range).

Currently, mailgun only provides an overview on purchased items and its price. However, this does not meet requirements for financial authorities, for instance in Austria. A proper invoice must contain:
- name and address of mailgun
- VAT of mailgun
- name and address of customer
- VAT of customer (if total exceeds a limit)
- explicitly account tax, or hint for reverse charge
- sequential number of invoice

I would like to use Mailgun from our test environment where I would send all mails to Mailgun (SMTP/API) but configure in the domain (sandbox has add recipient) the mail adresses that should realy be sent. The 5 recepients limit in Sandbox is not enough for our needs. A way to purchase more recipients and to enforce authorized recipients only from a sandbox domain.

Currently my app (email.mydomain.com) CNAME is pointed to mailgun.org, but when I have my users' domains point to email.mydomain.com, it does not accept this as a chain CNAME.

It would be nice to validate this so it can be whitelabel.

Currently mailgun API does not officially support non-ascii characters in filename attachments. There are workarounds but it would be nice if it was supported natively.

When doing Bulk Email with recipient variable substitutions, those substitutions are not applied to what is sent to the BCC address(es), so instead of getting a copy of what was actually sent to each of the normal recipients, the BCC is just the template.

I can imagine a variety of reasons why this might happen, but cannot come up with a reason why anyone would want it to work this way.

Implement U2F/Yubikey support for 2 factor auth.

This will enable people who can't use their phones in the office, but can use hardware tokens, to take advantage of the 2 factor auth you just implemented.

The "paging" array in the events API should show the total number of results and the number of pages so you can iterate through multiple pages easily, knowing exactly where you are in the pagination. The current version of the API shows no count so you have to paginate through the results blindly. Not ideal and impossible to mitigate performance issues when handling many pages of results.

The %unsubscribe_url% tag can be used to create a link to the Mailgun unsubscribe page, but once a user has unsubscribed they can't resubscribe themselves later. They might have unsubscribed in error, or changed their mind, but there's no way for them to opt back in themselves.

Ideally you'd have a "Manage my subscription" page that could be linked to via a tag like the %unsubscribe_url% tag, where a user can either unsubscribe or resubscribe themselves.

I'd like to set DKIM Selector for a domain using the API

Currently suppression come up in random date order which is of no use and makes no useful sense.

Suppressions in reverse chronological order would be most helpful to see the most recent items added to the suppression list so ones that are added can easily be removed. Sendgrid does this and it makes removing items from the list much easier.

I would like you to add a limit on the amount of messages that can be processed per month, for individual "SMTP Credential", for a given domain.

E.g. a domain "mydomain.com" has 3 SMTP Credentials: admin@mydomain.com, secretary@mydomain.com, and guest@mydomain.com

I would like to be able to specify how many monthly emails a specific SMTP Credential can send: admin@mydomain.com = unlimited, secretary@mydomain.com = 10,000, guest@mydomain.com = 1,000 emails per month.

Please add this feature.
Thanks

It would be great to add the ability to disable click tracking only for some specific links in an email.

In know that you can disable click tracking for all links in an email, but I couldn't find anything about doing it only for a specific link.

Currently, there is no documentation detailing the set of error codes and reasons that could appear in an Event. For event types, this appears to be the only available link https://documentation.mailgun.com/en/latest/api-events.html#event-types but has some inconsistencies.

Add a parameter so that it is possible to GET /lists/pages that are pre-filtered for a particular domain.

We were excited to discover the multi-user capability and are even more excited for the possibility of restricting access based on role and domain.