Hey developer gurus...

Running into a snag while trying to get coverage on an Inbound email handler. Looking to see if anyone can point me down the right path to getting a test method constructed properly so I can more this class into production. The class is "working" in sandbox perfectly but the test coverage I am getting is only 25%.

This class performs the following:

1. Receives the inbound email and dissects the envelope and email creating string variables where necessary

2. Looks up an existing account in the system and matches it to one of the toAddresses (Quote_Address__C field).

3. Looks for an existing contact where the contact's email matches the fromAddress in the envelope AND the account id from step 2.

4. Inserts a Quote Request record against the account with the contact added to that record.

5. If no contact is found, inserts a new contact on that account and then creates the quote request record.

6. Captures any attachments and adds them to the Quote Request record.

7. Sends an email back to the sender letting them know their request was received.

8. If no account is found, sends an error email back to the sender letting them know their request could not be processed.

I used a series of IF statements to qualify each of the 3 conditions that would come up to construct the logic behind how the email was handles and what record(s) were created. This seemed like the most reliable method to get the email handler to work 100% reliably.

Here's the class:

global class EmailQuoteRequest1 implements Messaging.InboundEmailHandler {

    public Contact vCon;
    public Account vAcc;
    public Quote_Request__c qr;
    public string toAddr;
    public string emailaddress;
    public String firstName;
    public String lastName;
    public String Subject;
    public String myPlainText;
    

 
   global Messaging.InboundEmailResult handleInboundEmail(
     Messaging.InboundEmail email,
     Messaging.InboundEnvelope envelope) {
    
         Messaging.InboundEmailResult result = new Messaging.InboundEmailresult();
         
         // Captures the sender's email address and name
         String emailAddress = envelope.fromAddress;           
         String lastName= email.fromName.substring(0,email.fromName.indexOf(' '));
         String firstName = email.fromName.substring(email.fromName.indexOf(' '));
         
         // Captures the email subject
         String Subject = email.Subject;
         
         // Add the email plain text into the local variable
         String myPlainText= '';
           myPlainText = email.plainTextBody;     
           
         //Capture the To: Addresses
         String[] toAddr = email.toAddresses; 
         
         //Check that toAddress list != null
         if (toAddr != null){                <---- I get coverage to here then nothing
         
         //Lookup Account from toAddress list
         if ([select count() from Account where Quote_Address__c in :toAddr] > 0)  {
             Account vAcc = [Select Id, OwnerId, Quote_Address__c 
             From Account
             Where Quote_Address__c in :toAddr 
             Limit 1];
             
             //Look for existing contact in the system
             if ([select count() from Contact where 
             AccountId = :vAcc.Id
             and
             Email = :envelope.fromAddress] > 0) {
                 Contact vCon = [Select Id 
                 from Contact
                 where Email = :envelope.fromAddress 
                 Limit 1];             
             
                 //Add the new Quote Request
                 Quote_Request__c[] qr = new Quote_Request__c[0];
                 qr.add(new Quote_Request__c(Request_Detail__c =  myPlainText,
                 Quote_Subject__c = Subject,
                 Customer_Contact__c = vCon.id,
                 Account__c =  vAcc.Id));
                 
                 try {                   
                   insert qr;
                   
                   //Insert Attachments if any
                     if (email.binaryAttachments != 
                     null && email.binaryAttachments.size() > 0)
                     {
                     for (integer i = 0 ; i < email.binaryAttachments.size() ; i++)
                     {
                     Attachment aB = new Attachment(ParentId = qr[0].Id,
                     Name = email.binaryAttachments[i].filename,
                     Body = email.binaryAttachments[i].body);
                     insert aB;
                     }
                     }
         
                     if (email.textAttachments != 
                     null && email.textAttachments.size() > 0)
                     {
                     for (integer i = 0 ; i < email.textAttachments.size() ; i++)
                     {
                     Attachment aT = new Attachment(ParentId = qr[0].Id,
                     Name = email.textAttachments[i].filename,
                     Body = Blob.valueOf(email.textAttachments[i].body));
                     insert aT;
                     }
                     }
                   
                   } catch (System.DmlException e)
                   { result.success = false;
                     result.message = 'failed to attach to account.';
                   System.debug('ERROR: Not able to create Quote Request: ' + e);
                 } 
                 
                     // Send return email to sender confirming receipt of request
                     Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
                     mail.setToAddresses( new String[] { emailAddress });
                     mail.setSubject('Your quote request has been received');
                     mail.setPlainTextBody('Thank you for submitting your request. { existing contact }. Your Account Manager will be in touch shortly to discuss the details of your request.');
                     Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });