Click-through rate (CTR) is the percentage of delivered messages in a campaign whose link was clicked, showing how well the copy and offer performed.
CTR is the middle link in the messaging metrics chain: delivery rate tells you the message arrived, CTR tells you it worked, and conversion tells you it paid. It is calculated as unique clicks divided by delivered messages — not by sent messages, because counting undelivered traffic makes weak campaigns look even weaker for the wrong reason. In SMS campaigns, CTR is tracked through short links with per-recipient parameters; in WhatsApp campaigns, button taps serve the same role.
Read CTR as a diagnostic, not a trophy. A healthy delivery rate combined with a falling CTR points to copy, offer, or frequency problems rather than routing issues. Example: an eCommerce brand comparing two promotional SMS variants sends each to a matched segment and keeps the version with the higher CTR — before scaling the campaign to the full verified list.
Bulk SMS alone leaks budget. Verify the list, then run WhatsApp-first with SMS fallback.
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Telegram OTP is free — until it silently fails. Know the limits and when to add fallback.
