Global A2P sender-ID playbook
How sender IDs work across markets: alphanumeric, numeric and short-code paths, registration expectations and country examples.
What's inside
- Three sender paths compared: alphanumeric, short code and long number.
- The registration timeline, the lead-time questions, and the pre-launch checklist for each destination.
- Mexico and Brazil examples; lead times are confirmed per sender at quote time.
8 pages
A registration path, not a string
A sender ID is a registration path, not a string in a form. Each destination decides which sender types it accepts, what documents it wants and how long the queue runs.
The matrix compares the three paths; the timeline shows the registration order; the checklist is what to finish before the first campaign.
Three sender paths
| Three sender paths | Alpha sender | Short code | Long number |
|---|---|---|---|
| Reply path | Usually no | Yes | Yes |
| Registration | Per market | National allocation | Per market |
| Best for | One-way alerts | High-volume two-way | Two-way with a local number |
Text description
Alphanumeric senders usually cannot receive replies; short codes are allocated nationally and support two-way traffic; long numbers are registered per market and support two-way traffic with a local number.
Registration runs before the campaign
Sender registration
- 1 Collect the legal entity and use case
- 2 Register the sender
- 3 Approval Current step
- 4 Send and monitor
Text description
The timeline is the registration order, not a promise of duration. Lead times vary by path, market and backlog and are confirmed per sender in the quote.
Pre-launch checklist
Where this fits
The Mexico and Brazil sender guide works the two examples; the glossary defines short code and sender registration; the content pre-check tests message content before a campaign.
Adjacent to what we offer
We explain this here because it affects how you use our service.
Who it's for
This site serves businesses
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