Hi Chris!

1. When composing an e-mail, you can tap the three dot menu, and the first option is the one you want. It works by Android's share mechanism. 2. If you enter a comma or a semicolon after the email address, you can add another one after, this works in all the fields (To, CC, BCC).

Regards, Balázs

Thanks, that may work with Thunderbird for Windows, I tried it on my Android mobile phone. Did not work.

And I did not find any helpful advices in the Internet/ Mozilla instructions.

I will move this topic from the Thunderbird desktop forum to the Android one. Perhaps then you will get answers from folk using the same platform as you.

1. About address book:

1. how can I use the google (or Samsung) email addressbook in Thunderbird for Android?

Thunderbird for Android can use the address book of your Android phone.

The following link might be helpful: https://support.mozilla.org/en-US/questions/1484999#answer-1702948

2. About adding multiple email addresses in an email:

2. How can I add more than one email address in an email in thunderbird for android?

The following link might be helpful: https://support.mozilla.org/en-US/questions/1505353#answer-1726094

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My response is almost the same as Balázs Meskó's response.