One of the most used features of MoreApp is sending an email with a PDF attachment after a form is filled in. In this blog post, I’d like to give you more background information on how we send those emails and what to do if you don’t seem to get your email.


Chances are that you’ve heard of the company Mailchimp. They provide a service that allows their users to design and send email campaigns. Their product is so successful that they decided to create a service out of their email servers, this is called: Mandrill and through this service, they literally send billions of emails each month and is trusted by more than 500,000 customers worldwide.

Because sending emails might sound simple enough, but in reality, there’s a lot of things to take into account we decided to not reinvent the wheel and entrust MoreApp’s mail sending capability to Mandrill. The result? We send tens of thousands of emails every month with an amazing 99.2% deliverability.

The (Less Than) 1%

But where do that 0.8 % of e-mails go? There are a number of possibilities:

1. Out of credits

Whenever you fill out a form, a credit is deducted from your account. However, if your credit balance is at 0, you (and your account’s other users) are never limited in the ability to fill out forms. But if you log-in to the MoreApp platform and you go to the tab ‘registrations’ when you select your form and you notice that the form you just filled in is not visible you might be out of credits. No worries, though, select the ‘Credits’ tab and check your balance, if it is at 0, go ahead and purchase a new bundle. After you’ve done so, your email will be resent.

2. Check your registration

Go to the registration overview page on the platform. Find your registration and click on the ‘eye icon’. If everything went well, you should have the option to download the PDF. If that option is there it means MoreApp at least tried to send you the email. If the option is not there, go ahead and check your email configuration, is something missing?

3. Size

Most mail servers won’t allow you to send a mail that’s bigger than 25mb in total size. For most emails, this is more than enough. But if your form includes a lot of photo’s, pin elements and signatures and you’ve chosen to attach photo’s to the email then you can quickly reach this limit. So again, if you’re able to download the PDF but you don’t receive the mail then maybe your email is too big to be received by the receiver.

4. Blacklist

Another option, although definitely not very common at all, is that your mail server might be actively refusing to receive our emails. The only way to check this is by contacting your mail server provider and asking them if emails from Mandrill are being blocked.

Hopefully, this blog post allows you to resolve any problems you may be having. But as always, you can contact MoreApp support through