Add detail to "Send emails from your alias" guide

docs/getting-started/send-email.md

@@ -2,7 +2,7 @@
 
 If you want to reply to an email, just hit "Reply" and the response will come from your alias. Your personal email address stays hidden.
 
-To send an email to a new contact, please follow the steps below. You can also watch this YouTube video for a quick walkthrough. Please note that this feature is available only with a paid plan (e.g., SimpleLogin Premium, Proton Pass Plus, and higher).
+To send an email to a new contact, or start a conversation with someone who is in contact with your alias, please follow the steps below. You can also watch this YouTube video for a quick walkthrough. Please note that this feature is available only with a paid plan (e.g., SimpleLogin Premium, Proton Pass Plus, and higher).
 
 
 [![Connect your NameCheap custom domain to SimpleLogin](https://img.youtube.com/vi/GN060XMt6Pc/0.jpg)](https://www.youtube.com/watch?v=GN060XMt6Pc)
@@ -15,7 +15,11 @@ To send an email to a new contact, please follow the steps below. You can also w
 
 ![](./send-email/new-contact.png)
 
-3) Send the email to this reverse-alias instead of the contact email.
+3) If SimpleLogin already picked up the alias because you have already received an email from them; copy the "Send To" alias address by clicking "Contacts" in step 1. Then the "Copy reverse-alias" button for any given contact. Do not lose this address as anyone will be able to send from your alias address.
+
+![](./send-email/copy-alias.png)
+
+4) Send the email to this reverse-alias instead of the contact email.
 
 ![](./send-email/reverse-alias.png)