After creating an invitation, share it with the people you want to invite. You can copy the invitation link and paste it on social media, in messaging apps or anywhere else, or you can email the invitation from Attendium. To share an invitation, go to Invitations (main menu) > Open or Personal > your invitation > Share:

Here, Copy copies the link, and Send emails the invitation to the address you enter. On devices that support it, Share opens your device's share options, so you can send the link through messaging apps like WhatsApp. If you have a list of email addresses in a spreadsheet and want to send each recipient a personal invitation, create the personal invitations from the file: go to Invitations (main menu) > Personal and then select Import. You can then email all of them at once:

Attendium keeps track of which personal invitations have been shared: sending by email, using Share or a response from the invitee marks an invitation as shared, while copying the link does not. When some haven't been shared, the Personal tab shows how many, with a Share invitations button. Select it and then the send button (for example, Send 12 emails) to email every unshared invitation that has an email address.
To email a few personal invitations, or to send some again:
Invitations that have already been shared are sent again. Invitations without an email address are skipped.