Do you want to send the email from the custom Lightning Component? If yes then use lighting:datatable to show the records into the table and after selecting the contacts you can send the email using apex.
OR
If you want to send from the configuration then use Send List Email Functionality
Contacts -> Select List View -> Select Contacts -> Send List Emails
Do you want to send the email from the custom Lightning Component? If yes then use lighting:datatable to show the records into the table and after selecting the contacts you can send the email using apex.
OR
If you want to send from the configuration then use Send List Email Functionality
Contacts -> Select List View -> Select Contacts -> Send List Emails
Regards,
Amit
https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/aura_compref_lightning_datatable.htm
For Calling Apex From Lighting Component
https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/controllers_server_actions_call.htm