I'm sending post event emails to participants Find Participants> Event Name is> send mail to less than 50). These send fine when just mail body text is included.

When I add an attachment and press submit I get the following error message enter image description here

I tried the same thing from find contacts- Find Contacts- random search criteria> send to less than 50.

Again, just text works fine, add an attachment and this time I get sent to the advanced search page with this message popping up

enter image description here

Currently Civi 5.19.4 Drup 7.69

Anyone seen anything similar?

Woo-hoo! Just recreated on dmaster.demo

enter image description here

Raised at lab.civicrm.org https://lab.civicrm.org/dev/core/issues/1604

1 Answer 1


The attachment size exceeded the site max file upload.

Not a bug in Civi as suspected, but the error message is really unhelpful in this instance.

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