How to Contact System favourite list all contact data get in flutter? - service

I have get all contact from contact list by contact_service package. but not fine the way to how to block contact function and also get the all favourite contact list from system favourite contact list.

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Is there a way to receive user contact form data from user and send them a auto generated email in backhand flutter

am working on flutter and am stack on user contact i wanna make contact form that receive user filled form data and send them a auto generated email like thank for submitting or contacting and store that form data app like form history or something

How to send a dynamic template email to a mailing list on Sendgrid

I have a newsletter I'd like to send every other week to the same list of users. I have a link for new users to sign up, and I'd like to let users unsubscribe at the bottom of the bi-weekly email.
Is there a way to send to a mailing list instead of just an array of users on Sendgrid?
The best I've seen is that you can make one API call to a mailing list to get the emails, but it caps you by returning a maximum of 50 users.
I've also seen that you can specify lists in marketing campaigns, but apparently you can't use dynamic templates in those campaigns? So I'd have to manually extract the HTML.
This leads me to believe I'll need to request the version of the template I want with test_data, grab the HTML content from that, and manually insert it into a new campaign with the mailing list ID I want?
Any ideas? Is there a better way?

Searching for contact via contact email returns every contact for user in Outlook API

Using ?$search="foo#bar.com" in the URL query I am attempting to get full contact info for a contact matching that email address and am instead getting every contact for the logged in user. The following query returns every contact for the logged in user including the one I want.
https://outlook.office.com/api/v2.0/me/contacts/?search="ChristopherTEllingson#dayrep.com"
How do I get just the one contact?
There's a slight typo in your URL. You're missing a $ in front of the search parameter, so it gets ignored. Try this:
https://outlook.office.com/api/v2.0/me/contacts/?$search="ChristopherTEllingson#dayrep.com"

How to take a diff of app contacts against phoneBook or diff of 2 ABAdressBookRef's?

I have a contact book on my application and need to sync those contacts with server cum phonebook regularly.
Rather taking total phoneBook to update app's contacts, I am thinking of diff of changed contacts for which I didn't find a functionality in ABAddessBook API. Problem is that the contact objects in the app are of different type to contact objects that I get from phoneBook
via function ABAddressBookCopyArrayOfAllPeople().
If I get difference of changed contacts efficiently, then I can just sync those contacts only.
Will that be possible?
Hey! I found that we can register to ABAdressBook change by ABAddressBookRegisterExternalChangeCallback, but is there a way to get diff of changed contacts?
Thanks.

ABAddressBookCopyArrayOfAllPeopleInSource

I built an iphone app that syncs with the iphone address book.
with some users, the contact list has "linked contacts" or unified or merged contacts, they appear at the bottom. so some users have one person as the main contact and more linked contacts for the same/or other contact in the exchange server or mobileMe or whatever.
I tried running ABAddressBookCopyArrayOfAllPeopleInSource with kABSourceTypeLocal but it still returned duplicate contacts when encountering contacts with linked contacts
how can I make sure I sync only the main identify without duplicates ?
You can use a class with the singleton pattern.