Comment # 2 on bug 1130376 from Michael Vetter

Unfortunately not.

I think claws-mail uses enchantment as glue for hunspell/aspell etc. I'm not
sure whether somehow after adding a dictionary one needs to
enchantment/hunspell.. that there is a new one before it is able to use it.

zypper se -i spell
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Reading installed packages...

S  | Name                       | Summary                                      
            | Type   
---+----------------------------+-----------------------------------------------------------+--------
i  | aspell                     | A Spell Checker                              
            | package
i+ | aspell-en                  | English Dictionaries for ASpell              
            | package
i  | enchant-2-backend-hunspell | Hunspell backend for the Enchant spell
checking library   | package
i  | gspell-lang                | Translations for package gspell              
            | package
i  | gtkspell-lang              | Translations for package gtkspell            
            | package
i  | gtkspell3-lang             | Translations for package gtkspell3           
            | package
i+ | hunspell                   | A spell checker and morphological analyzer
library        | package
i  | hunspell-tools             | Hunspell tools                               
            | package
i+ | ispell                     | A Spell Checker                              
            | package
i+ | ispell-american            | American ispell dictionary                   
            | package
i  | libaspell15                | GNU Aspell Library                           
            | package
i  | libgspell-1-2              | Spell checker library for GTK+               
            | package
i  | libgtkspell0               | GTK2 Spell Checker Interface Library         
            | package
i  | libgtkspell3-3-0           | GTK3 Spell Checker Interface Library         
            | package
i  | libhfstospell10            | HFST spell checker runtime libraries         
            | package
i  | libhunspell-1_7-0          | A spell checker and morphological analyzer
library        | package
i  | myspell-dictionaries       | A Source Package for Dictionaries Used by
MySpell         | package
i  | myspell-en                 | MySpell en Dictionary                        
            | package
i  | myspell-en_US              | MySpell en_US Dictionary                     
            | package
i  | myspell-lightproof-en      | Lightproof for en                            
            | package
i  | typelib-1_0-Gspell-1       | Introspection bindings for the GTK+ spell
checker library | package