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- macOS Sharing
- Image Effects
- Placeholders in Templates and Responses
- Global Filters and New Filter Criteria and Actions
- Quick Post
- ★ Trouble-Shooting Account Setup
- ★ A Guide to POP vs. IMAP
- Setting up 1 and 1 or 1and1 Email
- Replacing Windows Live Mail with Postbox
- Setting Up a New Mail Account
- Setting up GOOGLE / GMAIL Email Accounts
- Customizing the Toolbar
- Vertical and Classic View
- Customizing Font Sizes
- Display Unread Messages in Bold when in Vertical View
- Account Groups
- Increasing the Number of Accounts Shown in the Accounts Pane
- Gmail Important Folder
- Favorites Bar
- Using Gmail with Postbox
- Changing the Delete Behavior for Gmail Accounts
- Saved Passwords
- Mapping the Sent, Drafts, Templates, and Archive Folders
- Identity Selection in the Compose Window
- Send and Archive
- Sending from Google Apps Nicknames (Aliases)
- How to Specify a Storage Location for Mail Files
- Making a Person a Favorite Contact
- Making a Topic a Favorite Topic
- Social View in the Focus Pane
- Swipe Gestures for Mac Users
- Postbox Address Book
- Using the Mac Address Book / Contacts Application
- Collected Addresses
- Find or Match Specific Contacts when Addressing Messages
- Import Contacts from the Windows 8 People App or from Outlook.com (Hotmail, Live, MSN)
- Import Outlook Express / Windows Address Book (.wab files)
- Search Overview
- How to Index your Messages for Search
- Search Bar
- Searching for Files and Images
- Search within Compose Window
- Search by Contact
- Using Postbox with OmniFocus Pro
- Text-to-Speech and Dictation on Mac OS X
- How to Enable Spotlight Indexing in Postbox
- How to Use Spotlight to Search for Messages by Topic
- Excluding Certain Postbox files from Time Machine on Mac OS X
- macOS Spelling - Automatic By Language
- How to Change Selection Direction after Delete
- How to Delete a Corrupted Message
- How to Convert a POP Account to IMAP
- How to Import Contacts from a .csv file into the Personal Address Book
- How to Customize Font Colors in the Interface
- How to Delete an Unwanted Address from Auto-Completing in Compose
- ★ How to Trouble-Shoot Postbox
- Messages Return to the Inbox after Delete, Junk, or Archive Actions
- PDFs and Other Attachments Look Like Text Gibberish
- Strange Characters in Emails
- Postbox Slow to Recover or Respond from Indexing
- Postbox Operating Slowly
- Error code: ssl_error_ssl_disabled
- RC4 Cipher
- Error code: sec_error_untrusted_issuer
- Error: "Unable to open summary file..."
- Error code: ssl_error_no_cypher_overlap
- Security library failure (sec_error_library_failure)