<div Id= "Remove Part">
<apex:pageBlock title="Send an Email to Your {!account.name} Representatives">
    <p>Fill out the fields below to test how you might send an email to a user.</p><br />
        <apex:dataTable value="{!account.AccountTeamMembers}" var="contact" border="1">
            <apex:column ><apex:facet name="header">Name</apex:facet>{!contact.user.Name}</apex:column>
            <apex:column ><apex:facet name="header">Email</apex:facet>{!contact.user.Email}</apex:column>
        </apex:dataTable>
</div>
        <apex:commandButton value="Send Email" action="{!send}" /> 
</apex:pageBlock>

public class gibco {
    
    public Product_Brief__c pb {get;set;}
    public User u {get;set;}
    
    private ApexPages.StandardController controller {get;set;}
    public boolean bUpdate {get;set;}
    public string loggedinUserId = UserInfo.getUserId();
    public User u2 = [Select ContactId From User where Id =: '005R0000001Y6h4'];
    
    public String ctId{
        get {
             ctId = u2.ContactId;
             return ctId;
            }
        set;
    }
         
    Contact ct = [SELECT AccountId, Name FROM Contact WHERE id=:ctId];
    Account acname = [SELECT Name FROM Account WHERE id=:ct.AccountId];
    public string getacct(){
        Account acct = [SELECT Name FROM Account WHERE id=:ct.AccountId];  
        return acct.Name;
        return null;
        }
         
    Opportunity opp = [SELECT Id FROM Opportunity WHERE AccountId=:ct.AccountId LIMIT 1];
    
 /* ********************* Email ************************* */
    public String subject { get; set; }
    public String body { get; set; }
    private Account account;

    public Account getAccount() {
    account = [select Name, (SELECT user.Name, user.email from AccountTeamMembers) 
                from Account where id = :ct.AccountId];
        return account;
    }

    public PageReference send() {
        // Define the email
        Messaging.SingleEmailMessage email = new Messaging.SingleEmailMessage(); 
         
        
    String addresses;
    if (account.AccountTeamMembers[0].user.Email != null)
    {
        addresses = account.AccountTeamMembers[0].user.Email;
        // Loop through the whole list of contacts and their emails
        for (Integer i = 1; i < account.AccountTeamMembers.size(); i++) 
        {
            if (account.AccountTeamMembers[i].user.Email != null)
            {
                addresses += ':' + account.AccountTeamMembers[i].user.Email;
            }
        }
    }

        String[] toAddresses = addresses.split(':', 0);

        // Sets the paramaters of the email
        email.setSubject( 'New Media/Buffer Product Brief from '  + ct.Name + ' at ' + acname.Name);
        email.setToAddresses( toAddresses );
        String htmlBody= 'Dear ' + ct.Name + ':<br/><br/>';
                htmlBody += 'This is a reminder that your review of ' + ct.Name + ' for the position of ' + 
                    ct.Name + ' has not been completed yet. Please complete this review as soon as possible.' +
                    '<br/><br/>Review Link: <a href=https://cs2.salesforce.com/' + ApexPages.currentPage().getParameters().get('id') + '>click here</a><br/><br/>Thank You,<br/>Recruiting Dept.';
                email.setHtmlBody(htmlBody);
    
        // Sends the email
        Messaging.SendEmailResult [] r = 
            Messaging.sendEmail(new Messaging.SingleEmailMessage[] {email}); 
            ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Confirm,'The Product Breif has been submitted successfully. Thank you'));
        return null;
    }