Internal communication is directed to employees and people working inside an organization; external communication reaches customers, partners, media, regulators, or the public. The two often describe the same event, but their readers need different levels of operational detail. A launch may require staff training internally and an availability explanation externally. The underlying facts should still match.
Define the job of each message
Internal
Explain what changes in people's work, who is responsible, when action is needed, and where colleagues can ask questions safely.
External
Explain what happened, who is affected, what can be confirmed, and how an outside person can learn more or obtain help.
Both
Use accurate dates, names, numbers, and limitations from one approved fact sheet. Do not promise externally what employees cannot deliver.
Coordinate timing and confidentiality
If employees will answer customers' questions, give them the information and support they need before the public announcement when practical. If legal or market rules require a particular disclosure sequence, follow the responsible team's plan and avoid selective sharing of sensitive facts. 'Internal' does not mean a message can ignore privacy or be forwarded without consequences.
When facts are still developing, say what is known, what is not, and when the next update is expected. Keep a correction log so a changed figure or deadline reaches both audiences. PRSA's ethics guidance emphasizes accuracy, safeguarding confidences, and correction of erroneous information.
Measure understanding, not just delivery
For employees, an email delivery count is only an output. Check whether affected teams understand the new process and can complete the required action. For the public, monitor questions, support requests, or a neutral survey of understanding. AMEC separates distribution from what audiences take away and do. If internal and external responses differ, investigate whether the message, the channel, or the actual service experience is responsible.