Program & PDA reference

This is a reference page — for behavior and pricing, see the topic pages and Economics. It’s here for readers who want to see exactly what’s on-chain.

Program IDs

Program	Address
Mail program	`MaiLyqjRuHp8SSQHjiLMPmhBcuLitSta4YdoTiibXu4`
Alias program	`ALiasg6qDnwcY8HfyeC1AjXRFjyqpXxW4omtwF1i125q`

PDA seeds

Seed constant	Bytes
`POSTOFFICE_SEED`	`postoffice`
`MAIL_DOMAIN_SEED`	`maildomain`
`MAIL_MESSAGE_SEED`	`emailmessage`
`PUB_ENCRYPTION_KEY_SEED`	`encryption_key`
`FROMBOX_SEED`	`frombox`

Mailbox and alias accounts don’t use a named seed constant — they derive directly from the owner’s wallet address (mailbox) or the alias name’s blake3 hash (alias).

`MailInstruction` variants

Each variant is the on-chain instruction a sithbit command ultimately submits:

Instruction	Emitted by
`SendMail`	`mail send`
`DeleteMail`	`mail delete`
`CreateMailbox`	`mailbox create`
`UpdateMailbox`	`mailbox update`
`CreateFrombox`	`frombox create`
`UpdateFrombox`	`frombox update`
`AddStamps`	`frombox stamp`
`InitPostoffice`	`postmaster init`
`TransferPostmaster`	`postmaster transfer`
`CreateDomain`	`domain create`
`DeactivateDomain`	`domain deactivate`
`CloseDomain`	`domain close`
`TransferDomainAuthority`	`domain transfer`
`SetMailboxKey`	`mailbox set-key`
`WithdrawPostoffice`	`postmaster withdraw`
`CloseFrombox`	`frombox close`
`CloseMailbox`	`mailbox close`
`CloseKey`	`mailbox close-key`
`SetStampFee`	`postmaster set-stamp-fee`

`AliasInstruction` variants

Instruction	Emitted by
`CreateAlias`	`alias create` (and automatically by `mailbox create`)
`TransferAlias`	`alias transfer`
`CloseAlias`	`alias close`

Keyboard shortcuts

Solana Mail

Program & PDA reference

Program IDs

PDA seeds

MailInstruction variants

AliasInstruction variants

`MailInstruction` variants

`AliasInstruction` variants