01 — Regulations
Domestic vs International
Requirements differ by who is sending. Pick the scope that matches your business.
Sender ID registration is required for Bulgaria. The current requirements are shown below as provided by the SMSala Sender ID team.
Sender capabilities
Alphanumeric Sender IDSupported
Short codeSupported
Long numericNot supported
Sender formatAlphanumeric
Approval time7-Days
FeesNo Fees
ScopeDomestic company
Registration requirements
Registration requiredYes
Restrictions
Regulatory
Other Scams
Phishing
Delivery Phishing
Sending rules
URL restrictionsNo
OTPNo
Opt-out mandatoryYes
02 — Operators
Operator regulations
3 networks carry SMS traffic in Bulgaria. MNP is live in most markets — run an HLR lookup before routing.
A1 BulgariaMCC 284 · Registration required
Yettel BulgariaMCC 284 · Registration required
VivacomMCC 284 · Registration required
03 — Compliance
Additional compliance notes
Country & operator-specific guidance maintained by the Sender ID team.
Requirements
Use case description.Type of traffic,Company name,Company website
Required documents
Letter of Authorization.
Need help registering your Sender ID?
Our compliance specialists assist with registration requirements, document review, operator approvals, and both domestic and international onboarding.
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