Sending emails "from" your Gmail address has nothing to do with granting application access to your Gmail account.
The former is basic spoofing; the same thing spammers do to make it look like "you" sent that C!alis email. Any mail server can put whatever they want in email fields, no special access required.
The latter means that LinkedIn can actually harvest your list of contacts in Gmail for marketing. Way worse IMO and I encourage people to be very careful about what apps they authorize into their personal accounts like Google.
Comments
Sending emails "from" your Gmail address has nothing to do with granting application access to your Gmail account.
The former is basic spoofing; the same thing spammers do to make it look like "you" sent that C!alis email. Any mail server can put whatever they want in email fields, no special access required.
The latter means that LinkedIn can actually harvest your list of contacts in Gmail for marketing. Way worse IMO and I encourage people to be very careful about what apps they authorize into their personal accounts like Google.