Emails are not working

1. Can WordPress send emails?

picu uses functions built into WordPress to send emails. If you have any email issues, please make sure your WordPress installation can send emails, eg. notifications for new comments, resetting passwords etc. If those don’t work, picu can’t send out emails either.

A quick and easy test to check if your WordPress can send emails is to go to your WordPress login page and click on “Lost your password?”. Enter your mail address and click on “Get New Password”. If you do not get the email, it means that none of your WordPress emails are being sent. In this case you might want to contact your hosting provider to see why WordPress emails are not working.

2. Receiving a notification once the client has approved a collection

An email will be sent to the collection author, announcing that the client has approved a collection. This email will be sent to the email address specified in the author’s user profile. Make sure the email address is correct and working, otherwise you won’t receive any notifications! (To check your own email address, go to “Users > Profile” in your WordPress Admin.)

3. Changing the FROM name and address

In case picu emails end up in the client’s SPAM folder, they can either allowlist (whitelist) the from address (no-reply@ + your domain name) or you can define a different address (and FROM name) in the picu settings.

There are also two filters available to change the FROM name and FROM address. Have a look at the top of our developers page to learn how to use these snippets.

4. Using WP Mail SMTP?

If you are using the WP Mail SMTP plugin, make sure to set the FROM address to the same address you have configured in the WP Mail SMTP settings, or use their option “Force From Email”.

Upload Issues

Uploading large (image) files or a large number of files can sometimes lead to issues. If you experience “vanishing” images during upload or get an error message, please refer to our blog post about how to fix the most common upload problems.

Issues with TGMPA

You might find yourself with an error like the one below after activating one of our Pro modules:

An error of type E_ERROR was caused in line 2126 of the file /wp-content/themes/novo/tgm/class-tgm-plugin-activation.php. Error message: Cannot redeclare tgmpa() (previously declared in wp-content/plugins/picu-download/includes/class-tgm-plugin-activation.php:2175)

Here is how to fix it

When viewing a collection I get a “page not found” / 404 error

First of all: Make sure that the collection is actually sent or published before it can be accessed by your client. (You should always be able to preview a collection, if you are logged in.) When editing the collection, choose one of the sharing options, either “Send via email” or “Copy link & send manually”. Then click on “Send to Client” or “Publish” (you will see one of the two, depending on which option you selected earlier).

In your WordPress Admin, go to “Settings > Permalinks”. There is no need to “Save Changes”, just visiting the page will flush the rewrite rules so that any changes to the permalink structure will take effect. Sometimes this needs to be done manually, eg. after changing the language of your website or after a new plugin was activated that introduced new permalinks.

I don’t see any images when viewing my collection

In 90% of cases this issue stems from using some kind of optimization or caching plugin. Please make sure to exclude picu collections from any kind of optimization or caching in the respective plugin’s settings.

picu images show up in the Media Library

This sometimes happens. Usually third party plugins tamper with the way image uploads are connected to their parent. If that connection between image and collection is lost, picu can’t filter its images from appearing the library.

picu images do not show up in the Media Library

This is intentional. 🙂 We wanted to strictly separate the images that you use in a picu collection from the images you use on your website, thereby keeping you from accidentally using an image from a collection in a blog post or in your portfolio.

The media library would get completely crammed und confusing having hundreds or in some cases thousands of (temporary) images in there.

picu also cleans up behind itself: When you delete a collection, all images are deleted from the server automatically. (You can see how using an image elsewhere on the site would become a problem here.)

Maximum Upload Size?

picu will display the maximum upload size below the “Upload / Edit images” button, when creating a new collection.

Maximum Upload Size

This number indicates the maximum size a single image file may have to be uploaded.

The size depends on your web server configuration and differs between hosting poviders.

Disable right click

First of all: This is a bad thing to do, because it breaks basic functionality that people are used to having access to (eg. right clicking a link and opening it in a new tab).

Most photographers demand it, because they think it prevents people from downloading collection images to their hard drives. While it might deter clients that are not tech savvy, it is actually not an effective protection. Image links can always be accessed by looking at the source code, and therefor images can be accessed directly – and saved.

We added this functionality as a stand-alone plugin, because we have gotten this request a lot:
Download picu Disable Right Click (There are no settings. Activating the plugin disables right clicking on all picu collections.)

If you really want effective protection, you might want to watermark your images before uploading them. Have a look at our Theft Protection Pro module.

In the end we hope that you only deal with clients that respect you and your work and won’t steal your images.

Select Image Order

When sorting the collection image order by “created date”, it is required that the images contain the relevant EXIF or IPTC meta data. If that meta data is striped out of the files before uploading to picu, ordering by “created date” will not work correctly.

Multi-Client Collections

Sending a collection to more than one email address is possible starting with picu version 1.6.0.


  • You need picu Pro and at least Version 1.6.0 of the free picu plugin, to create multi-client collections.
  • In order to use it and to be compatible – all Pro modules need to be updated to at least the following versions:
    – Brand & Customize 1.5.0
    – Delivery 1.1.0
    – Download 1.1.0
    – Import 1.1.0
    – Mark & Comment 1.1.0
    – Selection Options 1.2.0
    – Theft Protection 1.1.0
  • You can only create multi-client collections by using “Send via email” under “Share Options”. It is not (yet) possible to use this feature when using “Copy link & send manually”.

How it works

  • To send a collection to multiple clients, enter more than one email addresses into the “Client Email” field
  • Each recipient will receive an email.
  • Each recipient will be able to make his/her individual selection and won’t see the selection of others
  • Once all recipients have approved the collection you will get a notification email and the collection will be marked as approved.
  • You can filter the image list – which is now linked to the “copy filenames” function – either by recipient or if an images has been selected at least once or by all of the recipients.

Still having issues?

In your WordPress Admin go to picu > Settings > Debug Info and send the contents of this page and your questions to